668840385 is an odd 9-digits composite number following 668840384
and preceding 668840386 . In scientific notation, it is written as 6.68840385 × 10^8.
The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors.
There are 356276928 positive integers (up to 668840385) that are relatively prime to 668840385.
668840385 has 8 divisors, whose sum is 714305664
The reverse of 668840385 is 583048866
Previous prime number is 827
Is Prime? no Number parity odd Number length 9 Sum of Digits 48 Digital Root 3
Name
six hundred sixty-eight million eight hundred forty thousand three hundred eighty-five
Scientific notation
6.68840385 × 10^8
Engineering notation
6.68840385 × 10^6
Prime Factorization
15 × 827 × 53917
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
668840385 Product of the distinct prime numbers
The prime factorization of 668840385 is 15 × 827 × 53917.
Since it has a total of 3 prime factors.
8 , 10 , 40 , 71 , 302 , 316 , 7052 , 9651 , 91565 , 68958 , 154935 , 958378 , 1761712 , 4420592 , 43342543 , 97927718 , 535171064 , 660112762 , 1285474464 , 2606213005
n×2
1337680770
n×3
2006521155
n×4
2675361540
n×5
3344201925
n÷2
334420192.5
n÷3
222946795
n÷3
167210096.25
n÷5
133768077
n2
447347460606948225
n3
2.9920404778112E+26
n4
2.0011975051149E+35
n5
1.3384817097821E+44
2 √n25861.948592478
3 √n874.52889360928
4 √n160.81650597025
5 √n58.218967309723
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
-668840384 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 668840385 can be divided by 8 positive divisors.
The sum of these divisors (counting 668840385) is 1, the average is 0.125.
Base
System
Value
2
Binary
100111110111011011000111000001
3
Ternary
1201121112121112010
4
Quaternary
213313123013001
5
Quinary
2332210343020
6
Senary
150211323133
8
Octal
4767330701
10
Decimal
668840385
12
Duodecimal
167bb04a9
16
Hexadecimal
27ddb1c1
20
Vigesimal
a9050j5
36
Base36
b27kjl
md5
1e581c31089494bb4077bdcb907041a7
sha1
ddacc449f5eaf01616b8b911e3315fbf4fbdd770
sha256
4a974a6bb85da60297a07123ff16c750397fa5beb31d42b62b486fd231d0e6c6
sha512
395506dccfdeb4a2c6560101e2edad3c7ed02774456e9041c6d182f08103a15450449b42627d52fb826a1f4fd0c8eafeed3ffaba48dadb3adf73bdd6a845379b
ripemd-160
0b125d4450f49fc09e7e5ac26b038656bf193650
Diameter
1337680770
Circumference
4202448079.8803
Area
1.4053834958448E+18
Volume
1.253302984578E+27
Surface area
5.6215339833794E+18
Circumference
4202448079.8803
Perimeter
2675361540
Area
447347460606948225
Diagonal
945883143.52984
Surface area
2684084763641689350
Volume
2.9920404778112E+26
Space diagonal
1158465528.9739
Perimeter
2006521155
Area
1.9370713260204E+17
Altitude
579232764.48696
Surface area
1.9370713260204E+17
Volume
3.5261535190749E+25
Height
315294381.17661