255840767 has 16 divisors (see below), whose sum is σ = 317782080. Its totient is φ = 200558592.

The previous prime is 255840743. The next prime is 255840797. The reversal of 255840767 is 767048552.

It is not a de Polignac number, because 255840767 - 2⁶ = 255840703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255840727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2978 + ... + 22815.

It is an arithmetic number, because the mean of its divisors is an integer number (19861380).

Almost surely, 2^255840767 is an apocalyptic number.

255840767 is a deficient number, since it is larger than the sum of its proper divisors (61941313).

255840767 is a wasteful number, since it uses less digits than its factorization.

255840767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25922.

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 255840767 is about 15995.0231947315. The cubic root of 255840767 is about 634.8287441950.

The spelling of 255840767 in words is "two hundred fifty-five million, eight hundred forty thousand, seven hundred sixty-seven".