631713656 has 16 divisors (see below), whose sum is σ = 1353672240. Its totient is φ = 270734400.

The previous prime is 631713647. The next prime is 631713671. The reversal of 631713656 is 656317136.

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, 5640245 + ... + 5640356.

It is an arithmetic number, because the mean of its divisors is an integer number (84604515).

Almost surely, 2^631713656 is an apocalyptic number.

It is an amenable number.

631713656 is an abundant number, since it is smaller than the sum of its proper divisors (721958584).

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

631713656 is a wasteful number, since it uses less digits than its factorization.

631713656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11280614 (or 11280610 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 631713656 is about 25133.9144583569. The cubic root of 631713656 is about 858.0384607200.

The spelling of 631713656 in words is "six hundred thirty-one million, seven hundred thirteen thousand, six hundred fifty-six".