66644 (number)
66,644 (sixtysix thousand six hundred fortyfour) is an even fivedigits composite number following 66643 and preceding 66645. In scientific notation, it is written as 6.6644 × 10^{4}. The sum of its digits is 26. It has a total of 3 prime factors and 6 positive divisors. There are 33,320 positive integers (up to 66644) that are relatively prime to 66644.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 5
 Sum of Digits 26
 Digital Root 8
Name
Short name  66 thousand 644 

Full name  sixtysix thousand six hundred fortyfour 
Notation
Scientific notation  6.6644 × 10^{4} 

Engineering notation  66.644 × 10^{3} 
Prime Factorization of 66644
Prime Factorization 2^{2} × 16661
Composite numberω(n)  Distinct Factors  2  Total number of distinct prime factors 

Ω(n)  Total Factors  3  Total number of prime factors 
rad(n)  Radical  33322  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  0  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 66,644 is 2^{2} × 16661. Since it has a total of 3 prime factors, 66,644 is a composite number.
Divisors of 66644
6 divisors
τ(n)  Total Divisors  6  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  116634  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  49990  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  19439  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  258.1549922043  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  3.4283656566696  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 66,644 can be divided by 6 positive divisors (out of which 4 are even, and 2 are odd). The sum of these divisors (counting 66,644) is 116,634, the average is 19,439.
Other Arithmetic Functions (n = 66644)
φ(n)  Euler Totient  33320  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  16660  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 6642  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  8  The number of ways n can be represented as the sum of 2 squares 
There are 33,320 positive integers (less than 66,644) that are coprime with 66,644. And there are approximately 6,642 prime numbers less than or equal to 66,644.
Divisibility of 66644
m  2  3  4  5  6  7  8  9 

n mod m  0  2  0  4  2  4  4  8 
The number 66,644 is divisible by 2 and 4.
Classification of 66644
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
Base conversion (66644)
Base  System  Value 

2  Binary  10000010001010100 
3  Ternary  10101102022 
4  Quaternary  100101110 
5  Quinary  4113034 
6  Senary  1232312 
8  Octal  202124 
10  Decimal  66644 
12  Duodecimal  32698 
16  Hexadecimal  10454 
20  Vigesimal  86c4 
36  Base36  1ff8 
Basic calculations (n = 66644)
Multiplication
n×yn×2  133288 

n×3  199932 
n×4  266576 
n×5  333220 
Division
n÷yn÷2  33322.000 

n÷3  22214.666 
n÷4  16661.000 
n÷5  13328.800 
Exponentiation
n^{y}n^{2}  4441422736 

n^{3}  295994176817984 
n^{4}  19726235919857725696 
n^{5}  1314635266642998271284224 
Nth Root
^{y}√n^{2}√n  258.1549922043 

^{3}√n  40.5434173414 
^{4}√n  16.067202376403 
^{5}√n  9.2204519961435 
66644 as geometric shapes
Circle
Radius = nDiameter  133288 

Circumference  418736.60161168 
Area  13953141038.904 
Sphere
Radius = nVolume  1.239857508529E+15 

Surface area  55812564155.617 
Circumference  418736.60161168 
Square
Length = nPerimeter  266576 

Area  4441422736 
Diagonal  94248.848650793 
Cube
Length = nSurface area  26648536416 

Volume  295994176817984 
Space diagonal  115430.79401962 
Equilateral Triangle
Length = nPerimeter  199932 

Area  1923192459.1609 
Altitude  57715.39700981 
Triangular Pyramid
Length = nSurface area  7692769836.6436 

Volume  34883248269954 
Height  54414.598139347 
Cryptographic Hash Functions
md5  a0dff62ec5344c0154d2180dc2dfb566 

sha1  932e543ec29e4f555b7cd77ded669592953c694e 
sha256  f39d29096d051e1e0fe1820b10c985c288680c7b8877c33eafcb7c9971d6ecf3 
sha512  1a6f3c15fcb098248736629171c4ea5d6771166b12cc1c4856d76ef2742d55ff9f5fec5bc70710bc45a0c978b7b92e87cfed0f74c074b0de9560d853262bad93 
ripemd160  b28ee4dadd7281efc6abbb2ef3c7459047afc573 