630304 has 12 divisors (see below), whose sum is σ = 1240974. Its totient is φ = 315136.

The previous prime is 630299. The next prime is 630307. The reversal of 630304 is 403036.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 21904 = 780^2 + 148^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (630307) by changing a digit.

630304 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9817 + ... + 9880.

2⁶³⁰³⁰⁴ is an apocalyptic number.

It is an amenable number.

630304 is a deficient number, since it is larger than the sum of its proper divisors (610670).

630304 is a wasteful number, since it uses less digits than its factorization.

630304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19707 (or 19699 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 630304 is about 793.9168722228. The cubic root of 630304 is about 85.7399753685.

The spelling of 630304 in words is "six hundred thirty thousand, three hundred four".