255768767 has 4 divisors (see below), whose sum is σ = 259371216. Its totient is φ = 252166320.

The previous prime is 255768743. The next prime is 255768769. The reversal of 255768767 is 767867552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255768767 - 2⁶ = 255768703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255768769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801118 + ... + 1801259.

It is an arithmetic number, because the mean of its divisors is an integer number (64842804).

Almost surely, 2^255768767 is an apocalyptic number.

255768767 is a deficient number, since it is larger than the sum of its proper divisors (3602449).

255768767 is an equidigital number, since it uses as much as digits as its factorization.

255768767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602448.

The product of its digits is 4939200, while the sum is 53.

The square root of 255768767 is about 15992.7723362774. The cubic root of 255768767 is about 634.7691863712.

It can be divided in two parts, 25576 and 8767, that added together give a palindrome (34343).

The spelling of 255768767 in words is "two hundred fifty-five million, seven hundred sixty-eight thousand, seven hundred sixty-seven".