256770877 has 8 divisors (see below), whose sum is σ = 280235232. Its totient is φ = 233326800.

The previous prime is 256770853. The next prime is 256770889. The reversal of 256770877 is 778077652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256770877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256770877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256773877) 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, 35727 + ... + 42307.

It is an arithmetic number, because the mean of its divisors is an integer number (35029404).

Almost surely, 2^256770877 is an apocalyptic number.

It is an amenable number.

256770877 is a deficient number, since it is larger than the sum of its proper divisors (23464355).

256770877 is a wasteful number, since it uses less digits than its factorization.

256770877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10139.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The square root of 256770877 is about 16024.0717983913. The cubic root of 256770877 is about 635.5971211708.

The spelling of 256770877 in words is "two hundred fifty-six million, seven hundred seventy thousand, eight hundred seventy-seven".