631879166 has 8 divisors (see below), whose sum is σ = 959238504. Its totient is φ = 312133000.

The previous prime is 631879159. The next prime is 631879247. The reversal of 631879166 is 661978136.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 631879166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903085 + ... + 1903416.

It is an arithmetic number, because the mean of its divisors is an integer number (119904813).

Almost surely, 2^631879166 is an apocalyptic number.

631879166 is a deficient number, since it is larger than the sum of its proper divisors (327359338).

631879166 is a wasteful number, since it uses less digits than its factorization.

631879166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806586.

The product of its digits is 326592, while the sum is 47.

The square root of 631879166 is about 25137.2068058486. The cubic root of 631879166 is about 858.1133899982.

The spelling of 631879166 in words is "six hundred thirty-one million, eight hundred seventy-nine thousand, one hundred sixty-six".