Base | Representation |
---|---|
bin | 1000001011111… |
… | …11000111000101 |
3 | 11210020012121210 |
4 | 10011333013011 |
5 | 120040144320 |
6 | 10452002033 |
7 | 1462516440 |
oct | 405770705 |
9 | 153205553 |
10 | 68678085 |
11 | 35848953 |
12 | 1b000319 |
13 | 112c7c28 |
14 | 919a657 |
15 | 60690e0 |
hex | 417f1c5 |
68678085 has 32 divisors (see below), whose sum is σ = 126270720. Its totient is φ = 31223808.
The previous prime is 68678083. The next prime is 68678107. The reversal of 68678085 is 58087686.
It is a happy number.
It is not a de Polignac number, because 68678085 - 21 = 68678083 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68678083) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18571 + ... + 21959.
It is an arithmetic number, because the mean of its divisors is an integer number (3945960).
Almost surely, 268678085 is an apocalyptic number.
It is an amenable number.
68678085 is a deficient number, since it is larger than the sum of its proper divisors (57592635).
68678085 is a wasteful number, since it uses less digits than its factorization.
68678085 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3597.
The product of its (nonzero) digits is 645120, while the sum is 48.
The square root of 68678085 is about 8287.2242035557. The cubic root of 68678085 is about 409.5177454923.
The spelling of 68678085 in words is "sixty-eight million, six hundred seventy-eight thousand, eighty-five".
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