255986694 has 12 divisors (see below), whose sum is σ = 554637876. Its totient is φ = 85328892.

The previous prime is 255986669. The next prime is 255986713. The reversal of 255986694 is 496689552.

It is a happy number.

255986694 is a `hidden beast` number, since 2 + 559 + 86 + 6 + 9 + 4 = 666.

255986694 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 255986694.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7110724 + ... + 7110759.

It is an arithmetic number, because the mean of its divisors is an integer number (46219823).

Almost surely, 2^255986694 is an apocalyptic number.

255986694 is an abundant number, since it is smaller than the sum of its proper divisors (298651182).

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

255986694 is a wasteful number, since it uses less digits than its factorization.

255986694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14221491 (or 14221488 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 255986694 is about 15999.5841820967. The cubic root of 255986694 is about 634.9494195767.

It can be divided in two parts, 2559 and 86694, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 255986694 in words is "two hundred fifty-five million, nine hundred eighty-six thousand, six hundred ninety-four".