764646775 has 12 divisors (see below), whose sum is σ = 978748864. Its totient is φ = 591984000.

The previous prime is 764646739. The next prime is 764646781. The reversal of 764646775 is 577646467.

It is not a de Polignac number, because 764646775 - 2⁷ = 764646647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492546 + ... + 494095.

Almost surely, 2^764646775 is an apocalyptic number.

764646775 is a deficient number, since it is larger than the sum of its proper divisors (214102089).

764646775 is a wasteful number, since it uses less digits than its factorization.

764646775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986682 (or 986677 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 52.

The square root of 764646775 is about 27652.2471962045. The cubic root of 764646775 is about 914.4366424770.

The spelling of 764646775 in words is "seven hundred sixty-four million, six hundred forty-six thousand, seven hundred seventy-five".