257602664 has 16 divisors (see below), whose sum is σ = 526914720. Its totient is φ = 117092080.

The previous prime is 257602663. The next prime is 257602693. The reversal of 257602664 is 466206752.

It is not an unprimeable number, because it can be changed into a prime (257602663) 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, 1463564 + ... + 1463739.

It is an arithmetic number, because the mean of its divisors is an integer number (32932170).

Almost surely, 2^257602664 is an apocalyptic number.

It is an amenable number.

257602664 is an abundant number, since it is smaller than the sum of its proper divisors (269312056).

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

257602664 is a wasteful number, since it uses less digits than its factorization.

257602664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927320 (or 2927316 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 257602664 is about 16050.0051090335. The cubic root of 257602664 is about 636.2827020038.

The spelling of 257602664 in words is "two hundred fifty-seven million, six hundred two thousand, six hundred sixty-four".