661873721 (number)

661873721 is an odd 9-digits composite number following 661873720 and preceding 661873722. In scientific notation, it is written as 6.61873721 × 10^8. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 627038244 positive integers (up to 661873721) that are relatively prime to 661873721.

Interesting facts

Basic properties

Name

Name six hundred sixty-one million eight hundred seventy-three thousand seven hundred twenty-one

Notation

Scientific notation 6.61873721 × 10^8
Engineering notation 6.61873721 × 10^6

Prime Factorization of 661873721

Prime Factorization 19 × 34835459

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 661873721
Product of the distinct prime numbers

The prime factorization of 661873721 is 19 × 34835459. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 661873721)

Multiplication

n×y
n×2 1323747442
n×3 1985621163
n×4 2647494884
n×5 3309368605

Division

n÷y
n÷2 330936860.5
n÷3 220624573.66667
n÷3 165468430.25
n÷5 132374744.2

Exponentiation

ny
n2 438076822550385841
n3 2.8995153662528E+26
n4 1.9191130245584E+35
n5 1.270210478584E+44

Nth Root

y√n
2√n 25726.906557144
3√n 871.48191570531
4√n 160.39609271159
5√n 58.097176671674

Divisors of 661873721

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 -661873720
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 661873721 can be divided by 4 positive divisors. The sum of these divisors (counting 661873721) is 1, the average is 0.25.

Base conversion 661873721

Base System Value
2 Binary 100111011100110110010000111001
3 Ternary 1201010102200001112
4 Quaternary 213130312100321
5 Quinary 2323414424341
6 Senary 145402130105
8 Octal 4734662071
10 Decimal 661873721
12 Duodecimal 1657b0935
16 Hexadecimal 27736439
20 Vigesimal a6ge461
36 Base36 ay2915

Cryptographic Hash Functions

md5 9ee164537da30948b6c27d4e06bc4fe2
sha1 28f91bb75422770bd56f6530e3a463dd059091c4
sha256 75f6f8cfa597a0c9e629bf5544db45c8303cf8a7075d4c5e4539cf3335b695a2
sha512 12c03fae219018499681839840499f91e6446db2a81bc92377a4a35c328972bfc933ca061b341ec3178eeaa51c946206a4c42afc03f33638810ae2782e5e76f6
ripemd-160 d5896f577f9d91704512e6506deb7b3daf337df3

661873721 as geometric shapes

Circle

Radius = n
Diameter 1323747442
Circumference 4158675238.9955
Area 1.3762589274323E+18

Sphere

Radius = n
Volume 1.2145461564787E+27
Surface area 5.505035709729E+18
Circumference 4158675238.9955

Square

Length = n
Perimeter 2647494884
Area 438076822550385841
Diagonal 936030792.81655

Cube

Length = n
Surface area 2628460935302315046
Volume 2.8995153662528E+26
Space diagonal 1146398912.9667

Equilateral Triangle

Length = n
Perimeter 1985621163
Area 1.896928285689E+17
Altitude 573199456.48333

Triangular Pyramid

Length = n
Surface area 1.896928285689E+17
Volume 3.4171116293866E+25
Height 312010264.27218