90765470764 has 12 divisors (see below), whose sum is σ = 158852771784. Its totient is φ = 45378964544.

The previous prime is 90765470713. The next prime is 90765470801. The reversal of 90765470764 is 46707456709.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888202 + ... + 985105.

It is an arithmetic number, because the mean of its divisors is an integer number (13237730982).

Almost surely, 2^90765470764 is an apocalyptic number.

It is an amenable number.

90765470764 is a deficient number, since it is larger than the sum of its proper divisors (68087301020).

90765470764 is a wasteful number, since it uses less digits than its factorization.

90765470764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885424 (or 1885422 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 90765470764 in words is "ninety billion, seven hundred sixty-five million, four hundred seventy thousand, seven hundred sixty-four".