671516056 has 16 divisors (see below), whose sum is σ = 1269008640. Its totient is φ = 333113760.

The previous prime is 671516047. The next prime is 671516063. The reversal of 671516056 is 650615176.

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, 329455 + ... + 331486.

It is an arithmetic number, because the mean of its divisors is an integer number (79313040).

Almost surely, 2^671516056 is an apocalyptic number.

It is an amenable number.

671516056 is a deficient number, since it is larger than the sum of its proper divisors (597492584).

671516056 is a wasteful number, since it uses less digits than its factorization.

671516056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661074 (or 661070 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 671516056 is about 25913.6268399466. The cubic root of 671516056 is about 875.6935153794.

The spelling of 671516056 in words is "six hundred seventy-one million, five hundred sixteen thousand, fifty-six".