630317656 has 8 divisors (see below), whose sum is σ = 1181845620. Its totient is φ = 315158824.

The previous prime is 630317651. The next prime is 630317657. The reversal of 630317656 is 656713036.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630317651) 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 as a sum of consecutive naturals, namely, 39394846 + ... + 39394861.

Almost surely, 2^630317656 is an apocalyptic number.

It is an amenable number.

630317656 is a deficient number, since it is larger than the sum of its proper divisors (551527964).

630317656 is a wasteful number, since it uses less digits than its factorization.

630317656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78789713 (or 78789709 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 630317656 is about 25106.1278575570. The cubic root of 630317656 is about 857.4059457058.

The spelling of 630317656 in words is "six hundred thirty million, three hundred seventeen thousand, six hundred fifty-six".