631668822 has 16 divisors (see below), whose sum is σ = 1265103360. Its totient is φ = 210261992.

The previous prime is 631668799. The next prime is 631668833. The reversal of 631668822 is 228866136.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68898 + ... + 77525.

It is an arithmetic number, because the mean of its divisors is an integer number (79068960).

Almost surely, 2^631668822 is an apocalyptic number.

631668822 is an abundant number, since it is smaller than the sum of its proper divisors (633434538).

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

631668822 is a wasteful number, since it uses less digits than its factorization.

631668822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147147.

The product of its digits is 165888, while the sum is 42.

The square root of 631668822 is about 25133.0225400766. The cubic root of 631668822 is about 858.0181613295.

The spelling of 631668822 in words is "six hundred thirty-one million, six hundred sixty-eight thousand, eight hundred twenty-two".