256774 has 8 divisors (see below), whose sum is σ = 440208. Its totient is φ = 110040.

The previous prime is 256771. The next prime is 256799. The reversal of 256774 is 477652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256771) 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, 9157 + ... + 9184.

It is an arithmetic number, because the mean of its divisors is an integer number (55026).

2²⁵⁶⁷⁷⁴ is an apocalyptic number.

256774 is a deficient number, since it is larger than the sum of its proper divisors (183434).

256774 is a wasteful number, since it uses less digits than its factorization.

256774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18350.

The product of its digits is 11760, while the sum is 31.

The square root of 256774 is about 506.7287242697. The cubic root of 256774 is about 63.5599697997.

The spelling of 256774 in words is "two hundred fifty-six thousand, seven hundred seventy-four".