631667004 has 12 divisors (see below), whose sum is σ = 1473889704. Its totient is φ = 210555664.

The previous prime is 631666991. The next prime is 631667021. The reversal of 631667004 is 400766136.

It is a tau number, because it is divible by the number of its divisors (12).

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, 26319447 + ... + 26319470.

It is an arithmetic number, because the mean of its divisors is an integer number (122824142).

Almost surely, 2^631667004 is an apocalyptic number.

It is an amenable number.

631667004 is an abundant number, since it is smaller than the sum of its proper divisors (842222700).

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

631667004 is a wasteful number, since it uses less digits than its factorization.

631667004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52638924 (or 52638922 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 631667004 is about 25132.9863724946. The cubic root of 631667004 is about 858.0173381775.

The spelling of 631667004 in words is "six hundred thirty-one million, six hundred sixty-seven thousand, four".