764040855 has 16 divisors (see below), whose sum is σ = 1243186560. Its totient is φ = 400581408.

The previous prime is 764040839. The next prime is 764040923. The reversal of 764040855 is 558040467.

It is not a de Polignac number, because 764040855 - 2⁴ = 764040839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430777 + ... + 432546.

It is an arithmetic number, because the mean of its divisors is an integer number (77699160).

Almost surely, 2^764040855 is an apocalyptic number.

764040855 is a deficient number, since it is larger than the sum of its proper divisors (479145705).

764040855 is a wasteful number, since it uses less digits than its factorization.

764040855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863390.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 764040855 is about 27641.2889533032. The cubic root of 764040855 is about 914.1950399113.

The spelling of 764040855 in words is "seven hundred sixty-four million, forty thousand, eight hundred fifty-five".