255850866 has 16 divisors (see below), whose sum is σ = 568557600. Its totient is φ = 85283604.

The previous prime is 255850849. The next prime is 255850891. The reversal of 255850866 is 668058552.

255850866 is a `hidden beast` number, since 2 + 5 + 585 + 0 + 8 + 66 = 666.

255850866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2368936 + ... + 2369043.

It is an arithmetic number, because the mean of its divisors is an integer number (35534850).

Almost surely, 2^255850866 is an apocalyptic number.

255850866 is an abundant number, since it is smaller than the sum of its proper divisors (312706734).

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

255850866 is a wasteful number, since it uses less digits than its factorization.

255850866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737990 (or 4737984 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 255850866 is about 15995.3388835623. The cubic root of 255850866 is about 634.8370971134.

The spelling of 255850866 in words is "two hundred fifty-five million, eight hundred fifty thousand, eight hundred sixty-six".