66808081 is an odd 8-digits composite number following 66808080
and preceding 66808082 . In scientific notation, it is written as 6.6808081 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 66472164 positive integers (up to 66808081) that are relatively prime to 66808081.
66808081 has 4 divisors, whose sum is 67144000
The reverse of 66808081 is 18080866
Previous prime number is 199
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
sixty-six million eight hundred eight thousand eighty-one
Scientific notation
6.6808081 × 10^7
Engineering notation
6.6808081 × 10^6
Prime Factorization
199 × 335719
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
66808081
Product of the distinct prime numbers
The prime factorization of 66808081 is 199 × 335719.
Since it has a total of 2 prime factors.
5 , 8 , 46 , 16 , 18 , 107 , 1002 , 1544 , 30745 , 69896 , 923375 , 431110 , 2996211 , 2039930 , 9258373 , 39240113 , 18656083 , 408632871 , 4230901272 , 5047001168
n×2
133616162
n×3
200424243
n×4
267232324
n×5
334040405
n÷2
33404040.5
n÷3
22269360.333333
n÷3
16702020.25
n÷5
13361616.2
n2
4463319686902561
n3
2.9818582317148E+23
n4
1.9921222627492E+31
n5
1.3308986549165E+39
2 √n
8173.6210457789
3 √n
405.76663407032
4 √n
90.408080644259
5 √n
36.725337827076
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
-66808080
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 66808081 can be divided by 4 positive divisors.
The sum of these divisors (counting 66808081) is 1, the average is 0.25.
Base
System
Value
2
Binary
11111110110110100100010001
3
Ternary
11122201012110101
4
Quaternary
3332312210101
5
Quinary
114100324311
6
Senary
10343532401
8
Octal
376664421
10
Decimal
66808081
12
Duodecimal
1a45a101
16
Hexadecimal
3fb6911
20
Vigesimal
10hb041
36
Base36
13rxg1
md5
efd36094ef889fb0202d6e3beefe4e6f
sha1
7ccb15d9d431dd5a21b816cf0ab9f913cb2fdeb4
sha256
019f67f45ccb97de7d23e47958fa8d6ef7ed092085244aa0123062f81560d1bf
sha512
c45b54ae8d73bb338f69af82f64793857ae4c365fdb5523b5d6bace2258b0e6e7ca0aea262e93649d6ae124c05020f6c66970506c830dba517f2f0c25c9f8a5e
ripemd-160
9d870c40f14cf1672a2dafe81428faac8b5d41f9
Diameter
133616162
Circumference
419767552.94006
Area
1.4021932338996E+16
Volume
1.2490378553069E+24
Surface area
5.6087729355983E+16
Circumference
419767552.94006
Perimeter
267232324
Area
4463319686902561
Diagonal
94480894.22632
Surface area
26779918121415366
Volume
2.9818582317148E+23
Space diagonal
115714990.64818
Perimeter
200424243
Area
1.9326741170344E+15
Altitude
57857495.324088
Surface area
1.9326741170344E+15
Volume
3.5141536269708E+22
Height
31493631.408773