631879776 has 72 divisors (see below), whose sum is σ = 1960273224. Its totient is φ = 191477760.

The previous prime is 631879771. The next prime is 631879777. The reversal of 631879776 is 677978136.

It is a tau number, because it is divible by the number of its divisors (72).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631879771) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 96561 + ... + 102896.

It is an arithmetic number, because the mean of its divisors is an integer number (27226017).

Almost surely, 2^631879776 is an apocalyptic number.

631879776 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

631879776 is an abundant number, since it is smaller than the sum of its proper divisors (1328393448).

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

631879776 is a wasteful number, since it uses less digits than its factorization.

631879776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199484 (or 199473 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 631879776 is about 25137.2189392542. The cubic root of 631879776 is about 858.1136661317.

The spelling of 631879776 in words is "six hundred thirty-one million, eight hundred seventy-nine thousand, seven hundred seventy-six".