671636976 has 20 divisors (see below), whose sum is σ = 1735062312. Its totient is φ = 223878976.

The previous prime is 671636939. The next prime is 671636983. The reversal of 671636976 is 679636176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6996171 + ... + 6996266.

Almost surely, 2^671636976 is an apocalyptic number.

It is an amenable number.

671636976 is an abundant number, since it is smaller than the sum of its proper divisors (1063425336).

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

671636976 is a wasteful number, since it uses less digits than its factorization.

671636976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13992448 (or 13992442 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 51.

The square root of 671636976 is about 25915.9598703193. The cubic root of 671636976 is about 875.7460743136.

The spelling of 671636976 in words is "six hundred seventy-one million, six hundred thirty-six thousand, nine hundred seventy-six".