256279863 has 8 divisors (see below), whose sum is σ = 390521728. Its totient is φ = 146445624.

The previous prime is 256279831. The next prime is 256279897. The reversal of 256279863 is 368972652.

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

It is not a de Polignac number, because 256279863 - 2⁵ = 256279831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256279663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6101881 + ... + 6101922.

It is an arithmetic number, because the mean of its divisors is an integer number (48815216).

Almost surely, 2^256279863 is an apocalyptic number.

256279863 is a deficient number, since it is larger than the sum of its proper divisors (134241865).

256279863 is a wasteful number, since it uses less digits than its factorization.

256279863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12203813.

The product of its digits is 1088640, while the sum is 48.

The square root of 256279863 is about 16008.7433298182. The cubic root of 256279863 is about 635.1917192405.

The spelling of 256279863 in words is "two hundred fifty-six million, two hundred seventy-nine thousand, eight hundred sixty-three".