630388 has 12 divisors (see below), whose sum is σ = 1203552. Its totient is φ = 286520.

The previous prime is 630353. The next prime is 630391. The reversal of 630388 is 883036.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7120 + ... + 7207.

It is an arithmetic number, because the mean of its divisors is an integer number (100296).

2⁶³⁰³⁸⁸ is an apocalyptic number.

It is an amenable number.

630388 is a deficient number, since it is larger than the sum of its proper divisors (573164).

630388 is a wasteful number, since it uses less digits than its factorization.

630388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14342 (or 14340 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 630388 is about 793.9697727244. The cubic root of 630388 is about 85.7437840270.

The spelling of 630388 in words is "six hundred thirty thousand, three hundred eighty-eight".