640804921 (number)

640804921 is an odd 9-digits composite number following 640804920 and preceding 640804922. In scientific notation, it is written as 6.40804921 × 10^8. The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors. There are 633837792 positive integers (up to 640804921) that are relatively prime to 640804921.

Interesting facts

Basic properties

Name

Name six hundred forty million eight hundred four thousand nine hundred twenty-one

Notation

Scientific notation 6.40804921 × 10^8
Engineering notation 6.40804921 × 10^6

Prime Factorization of 640804921

Prime Factorization 103 × 983 × 6329

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 640804921
Product of the distinct prime numbers

The prime factorization of 640804921 is 103 × 983 × 6329. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 6, 80, 55, 135, 186, 4660, 5513, 17349, 13767, 111533, 220700, 1738646, 211038, 25438905, 42437066, 229167187, 805095676, 9748620567, 2354099742

Basic calculations (n = 640804921)

Multiplication

n×y
n×2 1281609842
n×3 1922414763
n×4 2563219684
n×5 3204024605

Division

n÷y
n÷2 320402460.5
n÷3 213601640.33333
n÷3 160201230.25
n÷5 128160984.2

Exponentiation

ny
n2 410630946777816241
n3 2.6313433141011E+26
n4 1.6861777445165E+35
n5 1.0805109963668E+44

Nth Root

y√n
2√n 25314.12493056
3√n 862.13500585143
4√n 159.1041323491
5√n 57.722504682415

Divisors of 640804921

1, 103, 983, 6329, 101249, 651887, 6221407, 640804921

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -640804920
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 640804921 can be divided by 8 positive divisors. The sum of these divisors (counting 640804921) is 1, the average is 0.125.

Base conversion 640804921

Base System Value
2 Binary 100110001100011110100000111001
3 Ternary 1122122210021002121
4 Quaternary 212030132200321
5 Quinary 2303021224141
6 Senary 143330401241
8 Octal 4614364071
10 Decimal 640804921
12 Duodecimal 15a730221
16 Hexadecimal 2631e839
20 Vigesimal a050c61
36 Base36 alio8p

Cryptographic Hash Functions

md5 631384f21dc9319999f35c1f0e190e8f
sha1 d3a9a90bcf4347e2ff640117084b1d73731482f7
sha256 f2c90ade34c9d8cd3079e00388dd8b5890147b762c39ec10323e652754785851
sha512 6f187a85cfab7446ab1264ad374ee02b17eea53e51263b8aa982446263a1908e934a4a1e8b03cecdce6dff8d09b9055a79b7c79efb067dc0534cd9fbdfd53485
ripemd-160 cf66291bfd20202523688b0062b3550614f91cab

640804921 as geometric shapes

Circle

Radius = n
Diameter 1281609842
Circumference 4026296064.3956
Area 1.2900351657338E+18

Sphere

Radius = n
Volume 1.1022145099537E+27
Surface area 5.1601406629352E+18
Circumference 4026296064.3956

Square

Length = n
Perimeter 2563219684
Area 410630946777816241
Diagonal 906235010.11362

Cube

Length = n
Surface area 2463785680666897446
Volume 2.6313433141011E+26
Space diagonal 1109906680.9122

Equilateral Triangle

Length = n
Perimeter 1922414763
Area 1.7780841574482E+17
Altitude 554953340.45608

Triangular Pyramid

Length = n
Surface area 1.7780841574482E+17
Volume 3.1010678350513E+25
Height 302078336.70454