686945981 (number)

686945981 is an odd 9-digits composite number following 686945980 and preceding 686945982. In scientific notation, it is written as 6.86945981 × 10^8. The sum of its digits is 56. It has a total of 2 prime factors and 4 positive divisors. There are 686732700 positive integers (up to 686945981) that are relatively prime to 686945981.

Interesting facts

Basic properties

Name

Name six hundred eighty-six million nine hundred forty-five thousand nine hundred eighty-one

Notation

Scientific notation 6.86945981 × 10^8
Engineering notation 6.86945981 × 10^6

Prime Factorization of 686945981

Prime Factorization 3271 × 210011

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 686945981
Product of the distinct prime numbers

The prime factorization of 686945981 is 3271 × 210011. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 6, 47, 50, 240, 469, 5529, 3682, 97216, 4765, 467381, 388763, 7153334, 3024630, 65074031, 67481893, 421941601, 927525498, 3902234739, 525579578

Basic calculations (n = 686945981)

Multiplication

n×y
n×2 1373891962
n×3 2060837943
n×4 2747783924
n×5 3434729905

Division

n÷y
n÷2 343472990.5
n÷3 228981993.66667
n÷3 171736495.25
n÷5 137389196.2

Exponentiation

ny
n2 471894780812052361
n3 3.2416622313372E+26
n4 2.2268468415765E+35
n5 1.5297234881236E+44

Nth Root

y√n
2√n 26209.654347206
3√n 882.34994375043
4√n 161.89396019372
5√n 58.530807723119

Divisors of 686945981

1, 3271, 210011, 686945981

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 -686945980
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 686945981 can be divided by 4 positive divisors. The sum of these divisors (counting 686945981) is 1, the average is 0.25.

Base conversion 686945981

Base System Value
2 Binary 101000111100011111011010111101
3 Ternary 1202212121110201202
4 Quaternary 220330133122331
5 Quinary 2401324232411
6 Senary 152055345245
8 Octal 5074373275
10 Decimal 686945981
12 Duodecimal 172082225
16 Hexadecimal 28f1f6bd
20 Vigesimal aed84j1
36 Base36 bczmwt

Cryptographic Hash Functions

md5 c6f4c370142aaf93589624ce7fc794fb
sha1 f468c5482ba3396c37224eccc2b178621abbba2d
sha256 95de593fca1b7126281145b7bda0a80d0e650a476adb6581d00b8e07828f36de
sha512 cccc494066bf364ffa05eb9b06bc1d7f698301bb03b395b522ab62b488e1dff6978e9d9953f10fcb2f51644655865ba4efe70761656637a15b04f3e7af465744
ripemd-160 f3cbad5a4088614446acce3590002eac163fce68

686945981 as geometric shapes

Circle

Radius = n
Diameter 1373891962
Circumference 4316208894.6453
Area 1.4825011766665E+18

Sphere

Radius = n
Volume 1.3578643001851E+27
Surface area 5.930004706666E+18
Circumference 4316208894.6453

Square

Length = n
Perimeter 2747783924
Area 471894780812052361
Diagonal 971488322.94789

Cube

Length = n
Surface area 2831368684872314166
Volume 3.2416622313372E+26
Space diagonal 1189825341.1472

Equilateral Triangle

Length = n
Perimeter 2060837943
Area 2.0433643404826E+17
Altitude 594912670.57362

Triangular Pyramid

Length = n
Surface area 2.0433643404826E+17
Volume 3.8203355768247E+25
Height 323829440.98263