256613164 has 96 divisors (see below), whose sum is σ = 532224000. Its totient is φ = 107412480.

The previous prime is 256613117. The next prime is 256613173. The reversal of 256613164 is 461316652.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1722162 + ... + 1722310.

It is an arithmetic number, because the mean of its divisors is an integer number (5544000).

Almost surely, 2^256613164 is an apocalyptic number.

It is an amenable number.

256613164 is an abundant number, since it is smaller than the sum of its proper divisors (275610836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256613164 is a wasteful number, since it uses less digits than its factorization.

256613164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 256613164 is about 16019.1499150236. The cubic root of 256613164 is about 635.4669630309.

The spelling of 256613164 in words is "two hundred fifty-six million, six hundred thirteen thousand, one hundred sixty-four".