764445340 has 24 divisors (see below), whose sum is σ = 1620067680. Its totient is φ = 302971968.

The previous prime is 764445329. The next prime is 764445371. The reversal of 764445340 is 43544467.

It is a self number, because there is not a number n which added to its sum of digits gives 764445340.

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, 173152 + ... + 177511.

It is an arithmetic number, because the mean of its divisors is an integer number (67502820).

Almost surely, 2^764445340 is an apocalyptic number.

It is an amenable number.

764445340 is an abundant number, since it is smaller than the sum of its proper divisors (855622340).

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

764445340 is a wasteful number, since it uses less digits than its factorization.

764445340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350781 (or 350779 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 37.

The square root of 764445340 is about 27648.6046664203. The cubic root of 764445340 is about 914.3563371089.

The spelling of 764445340 in words is "seven hundred sixty-four million, four hundred forty-five thousand, three hundred forty".