631782912 has 80 divisors (see below), whose sum is σ = 1688833872. Its totient is φ = 209879040.

The previous prime is 631782869. The next prime is 631782913. The reversal of 631782912 is 219287136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631782913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646168 + ... + 647144.

Almost surely, 2^631782912 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 631782912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844416936).

631782912 is an abundant number, since it is smaller than the sum of its proper divisors (1057050960).

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

631782912 is an equidigital number, since it uses as much as digits as its factorization.

631782912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 1403 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 631782912 is about 25135.2921606255. The cubic root of 631782912 is about 858.0698157174.

The spelling of 631782912 in words is "six hundred thirty-one million, seven hundred eighty-two thousand, nine hundred twelve".