668742721 (number)

668742721 is an odd 9-digits composite number following 668742720 and preceding 668742722. In scientific notation, it is written as 6.68742721 × 10^8. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 668689344 positive integers (up to 668742721) that are relatively prime to 668742721.

Interesting facts

Basic properties

Name

Name six hundred sixty-eight million seven hundred forty-two thousand seven hundred twenty-one

Notation

Scientific notation 6.68742721 × 10^8
Engineering notation 6.68742721 × 10^6

Prime Factorization of 668742721

Prime Factorization 20089 × 33289

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 668742721
Product of the distinct prime numbers

The prime factorization of 668742721 is 20089 × 33289. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 2, 91, 6, 534, 660, 5333, 7478, 57145, 26874, 692044, 954322, 4976809, 4947950, 96947387, 71051418, 361427235, 376750485, 1452259978, 5139774710

Basic calculations (n = 668742721)

Multiplication

n×y
n×2 1337485442
n×3 2006228163
n×4 2674970884
n×5 3343713605

Division

n÷y
n÷2 334371360.5
n÷3 222914240.33333
n÷3 167185680.25
n÷5 133748544.2

Exponentiation

ny
n2 447216826890483841
n3 2.9907299769173E+26
n4 2.0000289025399E+35
n5 1.3375047703632E+44

Nth Root

y√n
2√n 25860.06034409
3√n 874.48632533275
4√n 160.8106350466
5√n 58.217266984958

Divisors of 668742721

1, 20089, 33289, 668742721

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 -668742720
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 668742721 can be divided by 4 positive divisors. The sum of these divisors (counting 668742721) is 1, the average is 0.25.

Base conversion 668742721

Base System Value
2 Binary 100111110111000011010001000001
3 Ternary 1201121100122112221
4 Quaternary 213313003101001
5 Quinary 2332144231341
6 Senary 150205251041
8 Octal 4767032101
10 Decimal 668742721
12 Duodecimal 167b63a81
16 Hexadecimal 27dc3441
20 Vigesimal a8jcgg1
36 Base36 b25h6p

Cryptographic Hash Functions

md5 cca1ae0a623749b66a7c80b512c0ca86
sha1 bbd4836b0e40d391ee9dbf11051ed30e956a1578
sha256 14e66e7fb32bc77dfab8db7acdcf433c46ffa65c21eaf19069d71ec7f805b6ba
sha512 bc5d819d919214cc7e596b5f123e8e867c416a09a29a451ab6763b5351b94b800fcbf9413d0697e422756d46f6486e1b227cf38684cea8588a7d4f82f5c119ad
ripemd-160 44e2822081c22ec32513ed3599c5ba2a4f329309

668742721 as geometric shapes

Circle

Radius = n
Diameter 1337485442
Circumference 4201834438.8705
Area 1.4049730979209E+18

Sphere

Radius = n
Volume 1.2527540432472E+27
Surface area 5.6198923916835E+18
Circumference 4201834438.8705

Square

Length = n
Perimeter 2674970884
Area 447216826890483841
Diagonal 945745025.77649

Cube

Length = n
Surface area 2683300961342903046
Volume 2.9907299769173E+26
Space diagonal 1158296369.9639

Equilateral Triangle

Length = n
Perimeter 2006228163
Area 1.9365056654351E+17
Altitude 579148184.98193

Triangular Pyramid

Length = n
Surface area 1.9365056654351E+17
Volume 3.5246090789602E+25
Height 315248341.9255