256959 has 16 divisors (see below), whose sum is σ = 394240. Its totient is φ = 165240.

The previous prime is 256957. The next prime is 256967. The reversal of 256959 is 959652.

It is not a de Polignac number, because 256959 - 2¹ = 256957 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

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 256959.

It is not an unprimeable number, because it can be changed into a prime (256957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684 + ... + 990.

It is an arithmetic number, because the mean of its divisors is an integer number (24640).

2²⁵⁶⁹⁵⁹ is an apocalyptic number.

256959 is a deficient number, since it is larger than the sum of its proper divisors (137281).

256959 is a wasteful number, since it uses less digits than its factorization.

256959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 341 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 256959 is about 506.9112348331. The cubic root of 256959 is about 63.5752306537.

It can be divided in two parts, 2569 and 59, that added together give a triangular number (2628 = T₇₂).

The spelling of 256959 in words is "two hundred fifty-six thousand, nine hundred fifty-nine".