631595648 has 16 divisors (see below), whose sum is σ = 1258257210. Its totient is φ = 315797760.

The previous prime is 631595609. The next prime is 631595677. The reversal of 631595648 is 846595136.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 542330944 + 89264704 = 23288^2 + 9448^2 .

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 2467043 + ... + 2467298.

Almost surely, 2^631595648 is an apocalyptic number.

It is an amenable number.

631595648 is a deficient number, since it is larger than the sum of its proper divisors (626661562).

631595648 is an equidigital number, since it uses as much as digits as its factorization.

631595648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934355 (or 4934343 counting only the distinct ones).

The product of its digits is 777600, while the sum is 47.

The square root of 631595648 is about 25131.5667637336. The cubic root of 631595648 is about 857.9850284371.

The spelling of 631595648 in words is "six hundred thirty-one million, five hundred ninety-five thousand, six hundred forty-eight".