764464220 has 24 divisors (see below), whose sum is σ = 1728865824. Its totient is φ = 282263616.

The previous prime is 764464219. The next prime is 764464231. The reversal of 764464220 is 22464467.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469864 + ... + 1470383.

It is an arithmetic number, because the mean of its divisors is an integer number (72036076).

Almost surely, 2^764464220 is an apocalyptic number.

It is an amenable number.

764464220 is an abundant number, since it is smaller than the sum of its proper divisors (964401604).

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

764464220 is a wasteful number, since it uses less digits than its factorization.

764464220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940269 (or 2940267 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 35.

The square root of 764464220 is about 27648.9460920303. The cubic root of 764464220 is about 914.3638645298.

The spelling of 764464220 in words is "seven hundred sixty-four million, four hundred sixty-four thousand, two hundred twenty".