631116656 has 10 divisors (see below), whose sum is σ = 1222788552. Its totient is φ = 315558320.

The previous prime is 631116643. The next prime is 631116671. The reversal of 631116656 is 656611136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19722380 + ... + 19722411.

Almost surely, 2^631116656 is an apocalyptic number.

It is an amenable number.

631116656 is a deficient number, since it is larger than the sum of its proper divisors (591671896).

631116656 is a wasteful number, since it uses less digits than its factorization.

631116656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39444799 (or 39444793 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 631116656 is about 25122.0352678679. The cubic root of 631116656 is about 857.7680795604.

The spelling of 631116656 in words is "six hundred thirty-one million, one hundred sixteen thousand, six hundred fifty-six".