977664632 has 16 divisors (see below), whose sum is σ = 2094995760. Its totient is φ = 418999104.

The previous prime is 977664619. The next prime is 977664661. The reversal of 977664632 is 236466779.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8729093 + ... + 8729204.

It is an arithmetic number, because the mean of its divisors is an integer number (130937235).

Almost surely, 2^977664632 is an apocalyptic number.

It is an amenable number.

977664632 is an abundant number, since it is smaller than the sum of its proper divisors (1117331128).

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

977664632 is a wasteful number, since it uses less digits than its factorization.

977664632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17458310 (or 17458306 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 50.

The square root of 977664632 is about 31267.6291394151. The cubic root of 977664632 is about 992.4987492661.

The spelling of 977664632 in words is "nine hundred seventy-seven million, six hundred sixty-four thousand, six hundred thirty-two".