630904 has 16 divisors (see below), whose sum is σ = 1252800. Its totient is φ = 296832.

The previous prime is 630901. The next prime is 630907. The reversal of 630904 is 409036.

It is an interprime number because it is at equal distance from previous prime (630901) and next prime (630907).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2184 + ... + 2455.

It is an arithmetic number, because the mean of its divisors is an integer number (78300).

2⁶³⁰⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

630904 is a deficient number, since it is larger than the sum of its proper divisors (621896).

630904 is a wasteful number, since it uses less digits than its factorization.

630904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4658 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 630904 is about 794.2946556537. The cubic root of 630904 is about 85.7671726523.

The spelling of 630904 in words is "six hundred thirty thousand, nine hundred four".