630013688 has 8 divisors (see below), whose sum is σ = 1181275680. Its totient is φ = 315006840.

The previous prime is 630013687. The next prime is 630013697. The reversal of 630013688 is 886310036.

It is a happy number.

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

It is a super-2 number, since 2×630013688² = 793834494134722688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630013687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39375848 + ... + 39375863.

It is an arithmetic number, because the mean of its divisors is an integer number (147659460).

Almost surely, 2^630013688 is an apocalyptic number.

It is an amenable number.

630013688 is a deficient number, since it is larger than the sum of its proper divisors (551261992).

630013688 is a wasteful number, since it uses less digits than its factorization.

630013688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78751717 (or 78751713 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 630013688 is about 25100.0734660279. The cubic root of 630013688 is about 857.2680967582.

The spelling of 630013688 in words is "six hundred thirty million, thirteen thousand, six hundred eighty-eight".