631648268 has 24 divisors (see below), whose sum is σ = 1122186912. Its totient is φ = 311036544.

The previous prime is 631648231. The next prime is 631648273. The reversal of 631648268 is 862846136.

It is an unprimeable number.

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, 281246 + ... + 283482.

It is an arithmetic number, because the mean of its divisors is an integer number (46757788).

Almost surely, 2^631648268 is an apocalyptic number.

It is an amenable number.

631648268 is a deficient number, since it is larger than the sum of its proper divisors (490538644).

631648268 is a wasteful number, since it uses less digits than its factorization.

631648268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281 (or 3279 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 631648268 is about 25132.6136324896. The cubic root of 631648268 is about 858.0088548196.

The spelling of 631648268 in words is "six hundred thirty-one million, six hundred forty-eight thousand, two hundred sixty-eight".