256610 has 16 divisors (see below), whose sum is σ = 470016. Its totient is φ = 100848.

The previous prime is 256609. The next prime is 256639. The reversal of 256610 is 16652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479 + ... + 861.

It is an arithmetic number, because the mean of its divisors is an integer number (29376).

2²⁵⁶⁶¹⁰ is an apocalyptic number.

256610 is a deficient number, since it is larger than the sum of its proper divisors (213406).

256610 is a wasteful number, since it uses less digits than its factorization.

256610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 256610 is about 506.5668761378. The cubic root of 256610 is about 63.5464351284.

The spelling of 256610 in words is "two hundred fifty-six thousand, six hundred ten".