631916604 has 36 divisors (see below), whose sum is σ = 1742559000. Its totient is φ = 191489760.

The previous prime is 631916603. The next prime is 631916627. The reversal of 631916604 is 406619136.

631916604 is a `hidden beast` number, since 6 + 31 + 9 + 16 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631916603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797479 + ... + 798270.

Almost surely, 2^631916604 is an apocalyptic number.

It is an amenable number.

631916604 is an abundant number, since it is smaller than the sum of its proper divisors (1110642396).

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

631916604 is a wasteful number, since it uses less digits than its factorization.

631916604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595770 (or 1595765 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 631916604 is about 25137.9514678504. The cubic root of 631916604 is about 858.1303370224.

The spelling of 631916604 in words is "six hundred thirty-one million, nine hundred sixteen thousand, six hundred four".