256334655 has 16 divisors (see below), whose sum is σ = 427968000. Its totient is φ = 130767648.

The previous prime is 256334647. The next prime is 256334671. The reversal of 256334655 is 556433652.

It is not a de Polignac number, because 256334655 - 2³ = 256334647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371155 + ... + 371844.

It is an arithmetic number, because the mean of its divisors is an integer number (26748000).

Almost surely, 2^256334655 is an apocalyptic number.

256334655 is a deficient number, since it is larger than the sum of its proper divisors (171633345).

256334655 is a wasteful number, since it uses less digits than its factorization.

256334655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743030.

The product of its digits is 324000, while the sum is 39.

The square root of 256334655 is about 16010.4545531974. The cubic root of 256334655 is about 635.2369834870.

The spelling of 256334655 in words is "two hundred fifty-six million, three hundred thirty-four thousand, six hundred fifty-five".