643555985 (number)

643555985 is an odd 9-digits composite number following 643555984 and preceding 643555986. In scientific notation, it is written as 6.43555985 × 10^8. The sum of its digits is 50. It has a total of 4 prime factors and 16 positive divisors. There are 479147328 positive integers (up to 643555985) that are relatively prime to 643555985.

Interesting facts

Basic properties

Name

Name six hundred forty-three million five hundred fifty-five thousand nine hundred eighty-five

Notation

Scientific notation 6.43555985 × 10^8
Engineering notation 6.43555985 × 10^6

Prime Factorization of 643555985

Prime Factorization 5 × 37 × 23 × 151247

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 643555985
Product of the distinct prime numbers

The prime factorization of 643555985 is 5 × 37 × 23 × 151247. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 8, 80, 47, 173, 511, 3501, 381, 65045, 75675, 539112, 733172, 1122771, 51598, 48357245, 1854634, 554967945, 701086292, 6061785993, 5505392547

Basic calculations (n = 643555985)

Multiplication

n×y
n×2 1287111970
n×3 1930667955
n×4 2574223940
n×5 3217779925

Division

n÷y
n÷2 321777992.5
n÷3 214518661.66667
n÷3 160888996.25
n÷5 128711197

Exponentiation

ny
n2 414164305829320225
n3 2.6653791778983E+26
n4 1.7153207222308E+35
n5 1.1039049169862E+44

Nth Root

y√n
2√n 25368.405251415
3√n 863.36699936131
4√n 159.27462211983
5√n 57.771981926593

Divisors of 643555985

1, 5, 23, 37, 115, 185, 851, 4255, 151247, 756235, 3478681, 5596139, 17393405, 27980695, 128711197, 643555985

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -643555984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 643555985 can be divided by 16 positive divisors. The sum of these divisors (counting 643555985) is 1, the average is 0.0625.

Base conversion 643555985

Base System Value
2 Binary 100110010110111110001010010001
3 Ternary 1122211222000211212
4 Quaternary 212112332022101
5 Quinary 2304222242420
6 Senary 143505345505
8 Octal 4626761221
10 Decimal 643555985
12 Duodecimal 15b638295
16 Hexadecimal 265be291
20 Vigesimal a1249j5
36 Base36 an5mz5

Cryptographic Hash Functions

md5 f706b29e1e411539d6582315e3b88735
sha1 90ab95540613c9c3c0835bb15e880d5667b74e39
sha256 37748557ed77a4beee51486ba434b49e2a1bc6ba77df390dfef8cb506a1b06b5
sha512 574700a9153ec09507937b915f0703baab6c4668da80547d164a43d00cfb0276e53f12b766235ac0cdf71048b3cd48389b3888ddc4180c72d6f6eb2ec15aa6b5
ripemd-160 ceb82799654ddd204b238d3dd1969897c83f4a6d

643555985 as geometric shapes

Circle

Radius = n
Diameter 1287111970
Circumference 4043581509.2995
Area 1.3011355405725E+18

Sphere

Radius = n
Volume 1.1164714192422E+27
Surface area 5.20454216229E+18
Circumference 4043581509.2995

Square

Length = n
Perimeter 2574223940
Area 414164305829320225
Diagonal 910125602.13338

Cube

Length = n
Surface area 2484985834975921350
Volume 2.6653791778983E+26
Space diagonal 1114671663.535

Equilateral Triangle

Length = n
Perimeter 1930667955
Area 1.7933840509447E+17
Altitude 557335831.76752

Triangular Pyramid

Length = n
Surface area 1.7933840509447E+17
Volume 3.1411794852088E+25
Height 303375200.71113