631717772 has 12 divisors (see below), whose sum is σ = 1263435600. Its totient is φ = 270736176.

The previous prime is 631717771. The next prime is 631717781. The reversal of 631717772 is 277717136.

631717772 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (631717771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11280647 + ... + 11280702.

It is an arithmetic number, because the mean of its divisors is an integer number (105286300).

Almost surely, 2^631717772 is an apocalyptic number.

It is an amenable number.

631717772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

631717772 is a wasteful number, since it uses less digits than its factorization.

631717772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22561360 (or 22561358 counting only the distinct ones).

The product of its digits is 86436, while the sum is 41.

The square root of 631717772 is about 25133.9963396194. The cubic root of 631717772 is about 858.0403242640.

The spelling of 631717772 in words is "six hundred thirty-one million, seven hundred seventeen thousand, seven hundred seventy-two".