646987381 (number)

646987381 is an odd 9-digits composite number following 646987380 and preceding 646987382. In scientific notation, it is written as 6.46987381 × 10^8. The sum of its digits is 52. It has a total of 2 prime factors and 4 positive divisors. There are 640317312 positive integers (up to 646987381) that are relatively prime to 646987381.

Interesting facts

Basic properties

Name

Name six hundred forty-six million nine hundred eighty-seven thousand three hundred eighty-one

Notation

Scientific notation 6.46987381 × 10^8
Engineering notation 6.46987381 × 10^6

Prime Factorization of 646987381

Prime Factorization 97 × 6669973

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 646987381
Product of the distinct prime numbers

The prime factorization of 646987381 is 97 × 6669973. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 3, 73, 75, 20, 517, 638, 1265, 9667, 70084, 679979, 946612, 4505941, 6077683, 5564338, 73409570, 160612399, 231330208, 2332391093, 9334128628

Basic calculations (n = 646987381)

Multiplication

n×y
n×2 1293974762
n×3 1940962143
n×4 2587949524
n×5 3234936905

Division

n÷y
n÷2 323493690.5
n÷3 215662460.33333
n÷3 161746845.25
n÷5 129397476.2

Exponentiation

ny
n2 418592671173239161
n3 2.7082417602817E+26
n4 1.7521982435995E+35
n5 1.1336501526192E+44

Nth Root

y√n
2√n 25435.946630704
3√n 864.89875122184
4√n 159.48650924358
5√n 57.833458193518

Divisors of 646987381

1, 97, 6669973, 646987381

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 -646987380
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 646987381 can be divided by 4 positive divisors. The sum of these divisors (counting 646987381) is 1, the average is 0.25.

Base conversion 646987381

Base System Value
2 Binary 100110100100000011111001110101
3 Ternary 1200002102100211121
4 Quaternary 212210003321311
5 Quinary 2311112044011
6 Senary 144111103541
8 Octal 4644037165
10 Decimal 646987381
12 Duodecimal 160811bb1
16 Hexadecimal 26903e75
20 Vigesimal a23d891
36 Base36 ap76np

Cryptographic Hash Functions

md5 131eed7266a725fab6a169a87b48e947
sha1 40521d671af995f233dd1d0308441b0e6818e65e
sha256 7327cd3ce2e60a2133fed1da4424c29978240dd8faa7486916a090cccaee6e96
sha512 d8654cdeb388822b73817c756697b79d7733b8f6ec1c2f5d5f917d155b2c40537fb45772b32b39a54bf33176ee026150193851972934bdef5c49a3acc8236dc4
ripemd-160 f35d7ed7fc07c82b958e1dc5cca6f834b884f79b

646987381 as geometric shapes

Circle

Radius = n
Diameter 1293974762
Circumference 4065141606.2298
Area 1.3150476606044E+18

Sphere

Radius = n
Volume 1.1344256557661E+27
Surface area 5.2601906424175E+18
Circumference 4065141606.2298

Square

Length = n
Perimeter 2587949524
Area 418592671173239161
Diagonal 914978328.89445

Cube

Length = n
Surface area 2511556027039434966
Volume 2.7082417602817E+26
Space diagonal 1120615015.7479

Equilateral Triangle

Length = n
Perimeter 1940962143
Area 1.8125594353701E+17
Altitude 560307507.87396

Triangular Pyramid

Length = n
Surface area 1.8125594353701E+17
Volume 3.1916935229796E+25
Height 304992776.29815