255856668 has 24 divisors (see below), whose sum is σ = 604558080. Its totient is φ = 84205680.

The previous prime is 255856661. The next prime is 255856703. The reversal of 255856668 is 866658552.

It is a self number, because there is not a number n which added to its sum of digits gives 255856668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255856661) 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, 133998 + ... + 135893.

It is an arithmetic number, because the mean of its divisors is an integer number (25189920).

Almost surely, 2^255856668 is an apocalyptic number.

It is an amenable number.

255856668 is an abundant number, since it is smaller than the sum of its proper divisors (348701412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255856668 is a wasteful number, since it uses less digits than its factorization.

255856668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269977 (or 269975 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 51.

The square root of 255856668 is about 15995.5202478694. The cubic root of 255856668 is about 634.8418958686.

The spelling of 255856668 in words is "two hundred fifty-five million, eight hundred fifty-six thousand, six hundred sixty-eight".