631699404 has 48 divisors (see below), whose sum is σ = 1687392000. Its totient is φ = 180179136.

The previous prime is 631699399. The next prime is 631699429. The reversal of 631699404 is 404996136.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45922 + ... + 58070.

It is an arithmetic number, because the mean of its divisors is an integer number (35154000).

Almost surely, 2^631699404 is an apocalyptic number.

It is an amenable number.

631699404 is an abundant number, since it is smaller than the sum of its proper divisors (1055692596).

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

631699404 is a wasteful number, since it uses less digits than its factorization.

631699404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12782 (or 12780 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 631699404 is about 25133.6309354618. The cubic root of 631699404 is about 858.0320079778.

The spelling of 631699404 in words is "six hundred thirty-one million, six hundred ninety-nine thousand, four hundred four".