631624684 has 12 divisors (see below), whose sum is σ = 1106474544. Its totient is φ = 315489104.

The previous prime is 631624661. The next prime is 631624699. The reversal of 631624684 is 486426136.

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, 76387 + ... + 84250.

It is an arithmetic number, because the mean of its divisors is an integer number (92206212).

Almost surely, 2^631624684 is an apocalyptic number.

It is an amenable number.

631624684 is a deficient number, since it is larger than the sum of its proper divisors (474849860).

631624684 is a wasteful number, since it uses less digits than its factorization.

631624684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161624 (or 161622 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 631624684 is about 25132.1444369556. The cubic root of 631624684 is about 857.9981761272.

The spelling of 631624684 in words is "six hundred thirty-one million, six hundred twenty-four thousand, six hundred eighty-four".