630628 has 12 divisors (see below), whose sum is σ = 1133692. Its totient is φ = 306720.

The previous prime is 630613. The next prime is 630659. The reversal of 630628 is 826036.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 40804 = 768^2 + 202^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 1983 + ... + 2278.

2⁶³⁰⁶²⁸ is an apocalyptic number.

It is an amenable number.

630628 is a deficient number, since it is larger than the sum of its proper divisors (503064).

630628 is a wasteful number, since it uses less digits than its factorization.

630628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 630628 is about 794.1208975968. The cubic root of 630628 is about 85.7546640444.

The spelling of 630628 in words is "six hundred thirty thousand, six hundred twenty-eight".