256935 has 16 divisors (see below), whose sum is σ = 470016. Its totient is φ = 117408.

The previous prime is 256931. The next prime is 256939. The reversal of 256935 is 539652.

It is an interprime number because it is at equal distance from previous prime (256931) and next prime (256939).

It is not a de Polignac number, because 256935 - 2² = 256931 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119 + ... + 1328.

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

2²⁵⁶⁹³⁵ is an apocalyptic number.

256935 is a deficient number, since it is larger than the sum of its proper divisors (213081).

256935 is a wasteful number, since it uses less digits than its factorization.

256935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462.

The product of its digits is 8100, while the sum is 30.

The square root of 256935 is about 506.8875614966. The cubic root of 256935 is about 63.5732512808.

The spelling of 256935 in words is "two hundred fifty-six thousand, nine hundred thirty-five".