257462664 has 16 divisors (see below), whose sum is σ = 643656720. Its totient is φ = 85820880.

The previous prime is 257462641. The next prime is 257462677. The reversal of 257462664 is 466264752.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5363782 + ... + 5363829.

It is an arithmetic number, because the mean of its divisors is an integer number (40228545).

Almost surely, 2^257462664 is an apocalyptic number.

257462664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

257462664 is an abundant number, since it is smaller than the sum of its proper divisors (386194056).

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

257462664 is a wasteful number, since it uses less digits than its factorization.

257462664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10727620 (or 10727616 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The square root of 257462664 is about 16045.6431469730. The cubic root of 257462664 is about 636.1674137026.

The spelling of 257462664 in words is "two hundred fifty-seven million, four hundred sixty-two thousand, six hundred sixty-four".