256635364 has 12 divisors (see below), whose sum is σ = 450037504. Its totient is φ = 128053224.

The previous prime is 256635361. The next prime is 256635397. The reversal of 256635364 is 463536652.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (256635361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63924 + ... + 67819.

Almost surely, 2^256635364 is an apocalyptic number.

It is an amenable number.

256635364 is a deficient number, since it is larger than the sum of its proper divisors (193402140).

256635364 is a wasteful number, since it uses less digits than its factorization.

256635364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132234 (or 132232 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The square root of 256635364 is about 16019.8428207021. The cubic root of 256635364 is about 635.4852875777.

The spelling of 256635364 in words is "two hundred fifty-six million, six hundred thirty-five thousand, three hundred sixty-four".