64578713 has 2 divisors, whose sum is σ = 64578714. Its totient is φ = 64578712.

The previous prime is 64578707. The next prime is 64578757. The reversal of 64578713 is 31787546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57032704 + 7546009 = 7552^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 64578713 - 2²⁴ = 47801497 is a prime.

It is not a weakly prime, because it can be changed into another prime (64578763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32289356 + 32289357.

It is an arithmetic number, because the mean of its divisors is an integer number (32289357).

Almost surely, 2^64578713 is an apocalyptic number.

It is an amenable number.

64578713 is a deficient number, since it is larger than the sum of its proper divisors (1).

64578713 is an equidigital number, since it uses as much as digits as its factorization.

64578713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 64578713 is about 8036.0881652705. The cubic root of 64578713 is about 401.2020362372.

The spelling of 64578713 in words is "sixty-four million, five hundred seventy-eight thousand, seven hundred thirteen".