255856677 has 4 divisors (see below), whose sum is σ = 341142240. Its totient is φ = 170571116.

The previous prime is 255856661. The next prime is 255856703. The reversal of 255856677 is 776658552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255856677 - 2⁴ = 255856661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255856177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42642777 + ... + 42642782.

It is an arithmetic number, because the mean of its divisors is an integer number (85285560).

Almost surely, 2^255856677 is an apocalyptic number.

It is an amenable number.

255856677 is a deficient number, since it is larger than the sum of its proper divisors (85285563).

255856677 is an equidigital number, since it uses as much as digits as its factorization.

255856677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85285562.

The product of its digits is 3528000, while the sum is 51.

The square root of 255856677 is about 15995.5205291982. The cubic root of 255856677 is about 634.8419033123.

The spelling of 255856677 in words is "two hundred fifty-five million, eight hundred fifty-six thousand, six hundred seventy-seven".