765667864 has 32 divisors (see below), whose sum is σ = 1547773920. Its totient is φ = 352993536.

The previous prime is 765667849. The next prime is 765667891. The reversal of 765667864 is 468766567.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103869 + ... + 110995.

It is an arithmetic number, because the mean of its divisors is an integer number (48367935).

Almost surely, 2^765667864 is an apocalyptic number.

It is an amenable number.

765667864 is an abundant number, since it is smaller than the sum of its proper divisors (782106056).

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

765667864 is a wasteful number, since it uses less digits than its factorization.

765667864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179 (or 8175 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 55.

The square root of 765667864 is about 27670.7040748876. The cubic root of 765667864 is about 914.8434995659.

The spelling of 765667864 in words is "seven hundred sixty-five million, six hundred sixty-seven thousand, eight hundred sixty-four".