764677665 has 80 divisors (see below), whose sum is σ = 1446052608. Its totient is φ = 385824384.

The previous prime is 764677657. The next prime is 764677673. The reversal of 764677665 is 566776467.

It is an interprime number because it is at equal distance from previous prime (764677657) and next prime (764677673).

It is not a de Polignac number, because 764677665 - 2³ = 764677657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 959047 + ... + 959843.

Almost surely, 2^764677665 is an apocalyptic number.

It is an amenable number.

764677665 is a deficient number, since it is larger than the sum of its proper divisors (681374943).

764677665 is a wasteful number, since it uses less digits than its factorization.

764677665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 931 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The square root of 764677665 is about 27652.8057346809. The cubic root of 764677665 is about 914.4489560351.

The spelling of 764677665 in words is "seven hundred sixty-four million, six hundred seventy-seven thousand, six hundred sixty-five".