66778890 is an even 8-digits composite number following 66778889
and preceding 66778891 . In scientific notation, it is written as 6.6778890 × 10^7.
The sum of its digits is 51. It has a total of 5 prime factors and 32 positive divisors.
There are 16028672 positive integers (up to 66778890) that are relatively prime to 66778890.
66778890 has 32 divisors, whose sum is 142668864
The reverse of 66778890 is 09887766
Previous prime number is 17
Is Prime? no Number parity even Number length 8 Sum of Digits 51 Digital Root 6
Name
sixty-six million seven hundred seventy-eight thousand eight hundred ninety
Scientific notation
6.6778890 × 10^7
Engineering notation
6.6778890 × 10^6
Prime Factorization
2 × 3 × 115 × 17 × 5693
Composite number
ω Distinct Factors
5 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
66778890 Product of the distinct prime numbers
The prime factorization of 66778890 is 2 × 3 × 115 × 17 × 5693.
Since it has a total of 5 prime factors.
8 , 5 , 12 , 85 , 302 , 457 , 5102 , 736 , 18543 , 50265 , 896882 , 240423 , 4614461 , 1393344 , 44467771 , 28121036 , 68016892 , 156426839 , 6933999705 , 8229740584
n×2
133557780
n×3
200336670
n×4
267115560
n×5
333894450
n÷2
33389445
n÷3
22259630
n÷3
16694722.5
n÷5
13355778
n2
4459420149632100
n3
2.9779512763607E+23
n4
1.9886428070945E+31
n5
1.3279935926425E+39
2 √n8171.8351672069
3 √n405.70752715194
4 √n90.398203340592
5 √n36.722127925706
1 , 2 , 3 , 6 , 17 , 34 , 51 , 102 , 115 , 230 , 345 , 690 , 1955 , 3910 , 5693 , 5865 , 11386 , 11730 , 17079 , 34158 , 96781 , 193562 , 290343 , 580686 , 654695 , 1309390 , 1964085 , 3928170 , 11129815 , 22259630 , 33389445 , 66778890
32 divisors
τ Total Divisors
32 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-66778889 Sum of the proper positive divisors of n
A Arithmetic Mean
0.03125 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
32 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 66778890 can be divided by 32 positive divisors.
The sum of these divisors (counting 66778890) is 1, the average is 0.03125.
Base
System
Value
2
Binary
11111110101111011100001010
3
Ternary
11122122201102020
4
Quaternary
3332233130022
5
Quinary
114043411030
6
Senary
10343145310
8
Octal
376573412
10
Decimal
66778890
12
Duodecimal
1a445236
16
Hexadecimal
3faf70a
20
Vigesimal
10h774a
36
Base36
13rax6
md5
47e926dcacb18f27cf0d65183c07e7f2
sha1
e7cd9b15506f22d4b0a082c60076c92c172ad0b3
sha256
747cfbedb60c60e9f52617618eca7e79ff3173dc37e7ab89dcba3d030a5332a7
sha512
1a9a550548f6165ea5615c5744bdaf8f56c5ddb6937e8cb0d852a32a522ec7635b56a18ac368add24a58e2e97cbc1f5bb7fac9618518811fd078191e7c4d0691
ripemd-160
47d8cb29fc81c69b17c5adbb5fde6729fcfacf2b
Diameter
133557780
Circumference
419584140.47776
Area
1.4009681581355E+16
Volume
1.2474013136751E+24
Surface area
5.6038726325418E+16
Circumference
419584140.47776
Perimeter
267115560
Area
4459420149632100
Diagonal
94439611.918221
Surface area
26756520897792600
Volume
2.9779512763607E+23
Space diagonal
115664430.35305
Perimeter
200336670
Area
1.9309855678648E+15
Altitude
57832215.176527
Surface area
1.9309855678648E+15
Volume
3.5095492359296E+22
Height
31479870.639407