256692 has 12 divisors (see below), whose sum is σ = 598976. Its totient is φ = 85560.

The previous prime is 256687. The next prime is 256699. The reversal of 256692 is 296652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256692.

It is not an unprimeable number, because it can be changed into a prime (256699) by changing a digit.

256692 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10684 + ... + 10707.

2²⁵⁶⁶⁹² is an apocalyptic number.

It is an amenable number.

256692 is an abundant number, since it is smaller than the sum of its proper divisors (342284).

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

256692 is a wasteful number, since it uses less digits than its factorization.

256692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21398 (or 21396 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 256692 is about 506.6478066665. The cubic root of 256692 is about 63.5532031847.

The spelling of 256692 in words is "two hundred fifty-six thousand, six hundred ninety-two".