764402056 has 64 divisors (see below), whose sum is σ = 1669662720. Its totient is φ = 324582720.

The previous prime is 764402017. The next prime is 764402083. The reversal of 764402056 is 650204467.

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, 82641 + ... + 91423.

It is an arithmetic number, because the mean of its divisors is an integer number (26088480).

Almost surely, 2^764402056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764402056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (834831360).

764402056 is an abundant number, since it is smaller than the sum of its proper divisors (905260664).

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

764402056 is a wasteful number, since it uses less digits than its factorization.

764402056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866 (or 8862 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 764402056 is about 27647.8219033616. The cubic root of 764402056 is about 914.3390793907.

The spelling of 764402056 in words is "seven hundred sixty-four million, four hundred two thousand, fifty-six".