631660052 has 12 divisors (see below), whose sum is σ = 1107128736. Its totient is φ = 315337560.

The previous prime is 631660039. The next prime is 631660097. The reversal of 631660052 is 250066136.

It is a junction number, because it is equal to n+sod(n) for n = 631659997 and 631660024.

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, 120224 + ... + 125367.

It is an arithmetic number, because the mean of its divisors is an integer number (92260728).

Almost surely, 2^631660052 is an apocalyptic number.

It is an amenable number.

631660052 is a deficient number, since it is larger than the sum of its proper divisors (475468684).

631660052 is a wasteful number, since it uses less digits than its factorization.

631660052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246238 (or 246236 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 631660052 is about 25132.8480678175. The cubic root of 631660052 is about 858.0141904438.

The spelling of 631660052 in words is "six hundred thirty-one million, six hundred sixty thousand, fifty-two".