630868 has 12 divisors (see below), whose sum is σ = 1261792. Its totient is φ = 270360.

The previous prime is 630863. The next prime is 630871. The reversal of 630868 is 868036.

630868 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11238 + ... + 11293.

2⁶³⁰⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

630868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

630868 is a wasteful number, since it uses less digits than its factorization.

630868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22542 (or 22540 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 630868 is about 794.2719937150. The cubic root of 630868 is about 85.7655413017.

The spelling of 630868 in words is "six hundred thirty thousand, eight hundred sixty-eight".