639968987 (number)

639968987 is an odd 9-digits composite number following 639968986 and preceding 639968988. In scientific notation, it is written as 6.39968987 × 10^8. The sum of its digits is 65. It has a total of 2 prime factors and 4 positive divisors. There are 548544840 positive integers (up to 639968987) that are relatively prime to 639968987.

Interesting facts

Basic properties

Name

Name six hundred thirty-nine million nine hundred sixty-eight thousand nine hundred eighty-seven

Notation

Scientific notation 6.39968987 × 10^8
Engineering notation 6.39968987 × 10^6

Prime Factorization of 639968987

Prime Factorization 7 × 91424141

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 639968987
Product of the distinct prime numbers

The prime factorization of 639968987 is 7 × 91424141. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 639968987)

Multiplication

n×y
n×2 1279937974
n×3 1919906961
n×4 2559875948
n×5 3199844935

Division

n÷y
n÷2 319984493.5
n÷3 213322995.66667
n÷3 159992246.75
n÷5 127993797.4

Exponentiation

ny
n2 409560304321806169
n3 2.6210589307224E+26
n4 1.6773964287617E+35
n5 1.073481693312E+44

Nth Root

y√n
2√n 25297.60832569
3√n 861.7599558956
4√n 159.0522188644
5√n 57.707436944795

Divisors of 639968987

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -639968986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 639968987 can be divided by 4 positive divisors. The sum of these divisors (counting 639968987) is 1, the average is 0.25.

Base conversion 639968987

Base System Value
2 Binary 100110001001010010011011011011
3 Ternary 1122121012210102002
4 Quaternary 212021102123123
5 Quinary 2302313001422
6 Senary 143300431215
8 Octal 4611223333
10 Decimal 639968987
12 Duodecimal 15a3a850b
16 Hexadecimal 262526db
20 Vigesimal 9jjg297
36 Base36 al0r8b

Cryptographic Hash Functions

md5 0c32a0ade95fc8702d2101d0f893e689
sha1 94df5f2e08aa214d811030429fa135080dab3117
sha256 82293c079253039f9eda35ba0df664a269c6ba2220292a1c723158761c1f3331
sha512 b0d75a4f917dfa2680245b4235a5cceab14a69586f9d1639a1f3791d4b96fc7c15359c3744b340967c1c55b47c4415cdf909f237dc31c68c45e85196b35b7c95
ripemd-160 58b78c68853d3fd693462cd67ba5f1ec45fd8e25

639968987 as geometric shapes

Circle

Radius = n
Diameter 1279937974
Circumference 4021043736.169
Area 1.2866716432594E+18

Sphere

Radius = n
Volume 1.0979065975178E+27
Surface area 5.1466865730375E+18
Circumference 4021043736.169

Square

Length = n
Perimeter 2559875948
Area 409560304321806169
Diagonal 905052820.91357

Cube

Length = n
Surface area 2457361825930837014
Volume 2.6210589307224E+26
Space diagonal 1108458800.7524

Equilateral Triangle

Length = n
Perimeter 1919906961
Area 1.7734481396218E+17
Altitude 554229400.37619

Triangular Pyramid

Length = n
Surface area 1.7734481396218E+17
Volume 3.0889475730056E+25
Height 301684273.63786