638961665 (number)

638961665 is an odd 9-digits composite number following 638961664 and preceding 638961666. In scientific notation, it is written as 6.38961665 × 10^8. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 511169328 positive integers (up to 638961665) that are relatively prime to 638961665.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million nine hundred sixty-one thousand six hundred sixty-five

Notation

Scientific notation 6.38961665 × 10^8
Engineering notation 6.38961665 × 10^6

Prime Factorization of 638961665

Prime Factorization 5 × 127792333

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 638961665
Product of the distinct prime numbers

The prime factorization of 638961665 is 5 × 127792333. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 5, 23, 43, 977, 357, 9026, 4441, 51011, 51374, 217026, 667362, 312877, 7172706, 25499923, 92707876, 734489695, 985317454, 1815938878, 2550485974

Basic calculations (n = 638961665)

Multiplication

n×y
n×2 1277923330
n×3 1916884995
n×4 2555846660
n×5 3194808325

Division

n÷y
n÷2 319480832.5
n÷3 212987221.66667
n÷3 159740416.25
n÷5 127792333

Exponentiation

ny
n2 408272009339572225
n3 2.6087016286051E+26
n4 1.6668603361017E+35
n5 1.065059855678E+44

Nth Root

y√n
2√n 25277.691053575
3√n 861.30757688413
4√n 158.98959416759
5√n 57.68925900005

Divisors of 638961665

1, 5, 127792333, 638961665

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 -638961664
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 638961665 can be divided by 4 positive divisors. The sum of these divisors (counting 638961665) is 1, the average is 0.25.

Base conversion 638961665

Base System Value
2 Binary 100110000101011100100000000001
3 Ternary 1122112022121121212
4 Quaternary 212011130200001
5 Quinary 2302033233130
6 Senary 143223055505
8 Octal 4605344001
10 Decimal 638961665
12 Duodecimal 159ba1595
16 Hexadecimal 2615c801
20 Vigesimal 9jda435
36 Base36 akf5z5

Cryptographic Hash Functions

md5 28d0176c061227bf953dcfe70c9a824e
sha1 bf317eb9b5d8fc7658add353e0c255ad38e7636a
sha256 517d5f1a0a7ab489b8ee7e3fc4ee9c7972559725c236556f08318e664ac0e961
sha512 cbf946b48d572883addfb2abd5fe18bcbb3941ddde85c9b4a38b0a4ecf5992fe093f208c7b26d30b8478013f7cf58e22c35a26a5735ea6daa0e0f9bdcb7153a6
ripemd-160 00283737e7d1ed7ef65712a4d779166e07a0d132

638961665 as geometric shapes

Circle

Radius = n
Diameter 1277923330
Circumference 4014714545.379
Area 1.2826243452075E+18

Sphere

Radius = n
Volume 1.0927303829111E+27
Surface area 5.1304973808302E+18
Circumference 4014714545.379

Square

Length = n
Perimeter 2555846660
Area 408272009339572225
Diagonal 903628252.47949

Cube

Length = n
Surface area 2449632056037433350
Volume 2.6087016286051E+26
Space diagonal 1106714067.8688

Equilateral Triangle

Length = n
Perimeter 1916884995
Area 1.7678696587109E+17
Altitude 553357033.9344

Triangular Pyramid

Length = n
Surface area 1.7678696587109E+17
Volume 3.0743843527984E+25
Height 301209417.49316