Base | Representation |
---|---|
bin | 1000001101111… |
… | …00000001100001 |
3 | 11210200212212112 |
4 | 10012330001201 |
5 | 120121140320 |
6 | 10501205105 |
7 | 1464606026 |
oct | 406740141 |
9 | 153625775 |
10 | 68927585 |
11 | 359a9351 |
12 | 1b100795 |
13 | 1138466c |
14 | 922354d |
15 | 60b7ec5 |
hex | 41bc061 |
68927585 has 4 divisors (see below), whose sum is σ = 82713108. Its totient is φ = 55142064.
The previous prime is 68927561. The next prime is 68927587. The reversal of 68927585 is 58572986.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58572986 = 2 ⋅29286493.
It can be written as a sum of positive squares in 2 ways, for example, as 8958049 + 59969536 = 2993^2 + 7744^2 .
It is a cyclic number.
It is not a de Polignac number, because 68927585 - 28 = 68927329 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68927587) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6892754 + ... + 6892763.
It is an arithmetic number, because the mean of its divisors is an integer number (20678277).
Almost surely, 268927585 is an apocalyptic number.
It is an amenable number.
68927585 is a deficient number, since it is larger than the sum of its proper divisors (13785523).
68927585 is a wasteful number, since it uses less digits than its factorization.
68927585 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13785522.
The product of its digits is 1209600, while the sum is 50.
The square root of 68927585 is about 8302.2638478911. The cubic root of 68927585 is about 410.0130572879.
The spelling of 68927585 in words is "sixty-eight million, nine hundred twenty-seven thousand, five hundred eighty-five".
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