257708 has 12 divisors (see below), whose sum is σ = 492072. Its totient is φ = 117120.

The previous prime is 257707. The next prime is 257711. The reversal of 257708 is 807752.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 257708.

It is not an unprimeable number, because it can be changed into a prime (257707) 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, 2885 + ... + 2972.

It is an arithmetic number, because the mean of its divisors is an integer number (41006).

2²⁵⁷⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

257708 is a deficient number, since it is larger than the sum of its proper divisors (234364).

257708 is a wasteful number, since it uses less digits than its factorization.

257708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872 (or 5870 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 257708 is about 507.6494853735. The cubic root of 257708 is about 63.6369417387.

The spelling of 257708 in words is "two hundred fifty-seven thousand, seven hundred eight".