Base | Representation |
---|---|
bin | 1000001100001… |
… | …10011011110101 |
3 | 11210021201202220 |
4 | 10012012123311 |
5 | 120042124320 |
6 | 10452352553 |
7 | 1463003055 |
oct | 406063365 |
9 | 153251686 |
10 | 68708085 |
11 | 35869446 |
12 | 1b015759 |
13 | 11308794 |
14 | 91a7565 |
15 | 6072e40 |
hex | 41866f5 |
68708085 has 24 divisors (see below), whose sum is σ = 115955040. Its totient is φ = 34644960.
The previous prime is 68708083. The next prime is 68708093. The reversal of 68708085 is 58080786.
It is a happy number.
It is not a de Polignac number, because 68708085 - 21 = 68708083 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68708083) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139690 + ... + 140180.
It is an arithmetic number, because the mean of its divisors is an integer number (4831460).
Almost surely, 268708085 is an apocalyptic number.
It is an amenable number.
68708085 is a deficient number, since it is larger than the sum of its proper divisors (47246955).
68708085 is an equidigital number, since it uses as much as digits as its factorization.
68708085 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1009 (or 518 counting only the distinct ones).
The product of its (nonzero) digits is 107520, while the sum is 42.
The square root of 68708085 is about 8289.0340209219. The cubic root of 68708085 is about 409.5773654033.
The spelling of 68708085 in words is "sixty-eight million, seven hundred eight thousand, eighty-five".
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