631716577636 has 27 divisors (see below), whose sum is σ = 1111643880249. Its totient is φ = 314113689648.

The previous prime is 631716577567. The next prime is 631716577663. The reversal of 631716577636 is 636775617136.

The square root of 631716577636 is 794806.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15717636900 + 615998940736 = 125370^2 + 784856^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 316331790 + ... + 316333786.

Almost surely, 2^631716577636 is an apocalyptic number.

631716577636 is the 794806-th square number.

It is an amenable number.

631716577636 is a deficient number, since it is larger than the sum of its proper divisors (479927302613).

631716577636 is an frugal number, since it uses more digits than its factorization.

631716577636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396 (or 2198 counting only the distinct ones).

The product of its digits is 20003760, while the sum is 58.

The spelling of 631716577636 in words is "six hundred thirty-one billion, seven hundred sixteen million, five hundred seventy-seven thousand, six hundred thirty-six".