764565020 has 12 divisors (see below), whose sum is σ = 1605586584. Its totient is φ = 305826000.

The previous prime is 764565013. The next prime is 764565031. The reversal of 764565020 is 20565467.

It is a congruent number.

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, 19114106 + ... + 19114145.

It is an arithmetic number, because the mean of its divisors is an integer number (133798882).

Almost surely, 2^764565020 is an apocalyptic number.

It is an amenable number.

764565020 is an abundant number, since it is smaller than the sum of its proper divisors (841021564).

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

764565020 is a wasteful number, since it uses less digits than its factorization.

764565020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38228260 (or 38228258 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 764565020 is about 27650.7688862353. The cubic root of 764565020 is about 914.4040512054.

The spelling of 764565020 in words is "seven hundred sixty-four million, five hundred sixty-five thousand, twenty".