256746 has 16 divisors (see below), whose sum is σ = 586944. Its totient is φ = 73344.

The previous prime is 256723. The next prime is 256757. The reversal of 256746 is 647652.

It is an unprimeable number.

256746 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3015 + ... + 3098.

It is an arithmetic number, because the mean of its divisors is an integer number (36684).

2²⁵⁶⁷⁴⁶ is an apocalyptic number.

256746 is an abundant number, since it is smaller than the sum of its proper divisors (330198).

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

256746 is a wasteful number, since it uses less digits than its factorization.

256746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125.

The product of its digits is 10080, while the sum is 30.

The square root of 256746 is about 506.7010953215. The cubic root of 256746 is about 63.5576594102.

The spelling of 256746 in words is "two hundred fifty-six thousand, seven hundred forty-six".