Base | Representation |
---|---|
bin | 1000001101011… |
… | …01101010011101 |
3 | 11210120220012000 |
4 | 10012231222131 |
5 | 120112300030 |
6 | 10500032513 |
7 | 1464242400 |
oct | 406555235 |
9 | 153526160 |
10 | 68868765 |
11 | 35969139 |
12 | 1b092739 |
13 | 11363964 |
14 | 9209d37 |
15 | 60a5860 |
hex | 41ada9d |
68868765 has 96 divisors (see below), whose sum is σ = 147744000. Its totient is φ = 30312576.
The previous prime is 68868733. The next prime is 68868791. The reversal of 68868765 is 56786886.
It is not a de Polignac number, because 68868765 - 25 = 68868733 is a prime.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 191656 + ... + 192014.
It is an arithmetic number, because the mean of its divisors is an integer number (1539000).
Almost surely, 268868765 is an apocalyptic number.
It is an amenable number.
68868765 is an abundant number, since it is smaller than the sum of its proper divisors (78875235).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68868765 is a wasteful number, since it uses less digits than its factorization.
68868765 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 416 (or 403 counting only the distinct ones).
The product of its digits is 3870720, while the sum is 54.
The square root of 68868765 is about 8298.7206845393. The cubic root of 68868765 is about 409.8963946028.
It can be divided in two parts, 6886 and 8765, that added together give a palindrome (15651).
The spelling of 68868765 in words is "sixty-eight million, eight hundred sixty-eight thousand, seven hundred sixty-five".
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