631982976 has 64 divisors (see below), whose sum is σ = 1685917200. Its totient is φ = 209756160.

The previous prime is 631982969. The next prime is 631982987. The reversal of 631982976 is 679289136.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 89130 + ... + 95958.

Almost surely, 2^631982976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631982976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842958600).

631982976 is an abundant number, since it is smaller than the sum of its proper divisors (1053934224).

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

631982976 is a wasteful number, since it uses less digits than its factorization.

631982976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087 (or 7075 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 631982976 is about 25139.2715884928. The cubic root of 631982976 is about 858.1603799281.

The spelling of 631982976 in words is "six hundred thirty-one million, nine hundred eighty-two thousand, nine hundred seventy-six".