255633867 has 16 divisors (see below), whose sum is σ = 384053760. Its totient is φ = 168021000.

The previous prime is 255633841. The next prime is 255633881. The reversal of 255633867 is 768336552.

255633867 is a `hidden beast` number, since 2 + 5 + 5 + 633 + 8 + 6 + 7 = 666.

It is not a de Polignac number, because 255633867 - 2⁶ = 255633803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255633817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64759 + ... + 68592.

It is an arithmetic number, because the mean of its divisors is an integer number (24003360).

Almost surely, 2^255633867 is an apocalyptic number.

255633867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

255633867 is a deficient number, since it is larger than the sum of its proper divisors (128419893).

255633867 is a wasteful number, since it uses less digits than its factorization.

255633867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133431 (or 133425 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 255633867 is about 15988.5542498376. The cubic root of 255633867 is about 634.6575680745.

The spelling of 255633867 in words is "two hundred fifty-five million, six hundred thirty-three thousand, eight hundred sixty-seven".