686991021 (number)

686991021 is an odd 9-digits composite number following 686991020 and preceding 686991022. In scientific notation, it is written as 6.86991021 × 10^8. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 454650720 positive integers (up to 686991021) that are relatively prime to 686991021.

Interesting facts

Basic properties

Name

Name six hundred eighty-six million nine hundred ninety-one thousand twenty-one

Notation

Scientific notation 6.86991021 × 10^8
Engineering notation 6.86991021 × 10^6

Prime Factorization of 686991021

Prime Factorization 3 × 137 × 1671511

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 686991021
Product of the distinct prime numbers

The prime factorization of 686991021 is 3 × 137 × 1671511. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 7, 96, 16, 342, 660, 7254, 36, 35014, 27938, 745335, 167227, 7928288, 662387, 37800864, 95864304, 143781374, 81828123, 3295959627, 1082903415

Basic calculations (n = 686991021)

Multiplication

n×y
n×2 1373982042
n×3 2060973063
n×4 2747964084
n×5 3434955105

Division

n÷y
n÷2 343495510.5
n÷3 228997007
n÷3 171747755.25
n÷5 137398204.2

Exponentiation

ny
n2 471956662934622441
n3 3.2422998973721E+26
n4 2.2274309168838E+35
n5 1.530225039797E+44

Nth Root

y√n
2√n 26210.513558494
3√n 882.3692272526
4√n 161.89661379564
5√n 58.531575224063

Divisors of 686991021

1, 3, 137, 411, 1671511, 5014533, 228997007, 686991021

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 -686991020
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 686991021 can be divided by 8 positive divisors. The sum of these divisors (counting 686991021) is 1, the average is 0.125.

Base conversion 686991021

Base System Value
2 Binary 101000111100101010011010101101
3 Ternary 1202212200202111220
4 Quaternary 220330222122231
5 Quinary 2401332203041
6 Senary 152100333553
8 Octal 5074523255
10 Decimal 686991021
12 Duodecimal 1720a42b9
16 Hexadecimal 28f2a6ad
20 Vigesimal aeddhb1
36 Base36 bd0lnx

Cryptographic Hash Functions

md5 3e4645858f27f65a6aa9df5944caf84e
sha1 b88be87c4a920e3380393f50ef9d9efcebe4fcd0
sha256 b163c302e90cf37f90c809af87e23dccb9a55058a68813daea5cbf8ba7889539
sha512 676fca016d227f57e675993c752025473169e66949d5ccf75fdce8123ea316ddebe35a0cdb9d61b99f0b5d5af15591e83b14a3ac6eec3ce53f672bdd1e6084af
ripemd-160 8f03afe1340f6fc86d69c648d7c2dc00371f50e8

686991021 as geometric shapes

Circle

Radius = n
Diameter 1373982042
Circumference 4316491889.3115
Area 1.4826955850882E+18

Sphere

Radius = n
Volume 1.3581314051092E+27
Surface area 5.9307823403527E+18
Circumference 4316491889.3115

Square

Length = n
Perimeter 2747964084
Area 471956662934622441
Diagonal 971552019.12674

Cube

Length = n
Surface area 2831739977607734646
Volume 3.2422998973721E+26
Space diagonal 1189903352.7156

Equilateral Triangle

Length = n
Perimeter 2060973063
Area 2.0436322979336E+17
Altitude 594951676.35781

Triangular Pyramid

Length = n
Surface area 2.0436322979336E+17
Volume 3.8210870734538E+25
Height 323850673.04225