630530 has 16 divisors (see below), whose sum is σ = 1202040. Its totient is φ = 237312.

The previous prime is 630529. The next prime is 630559. The reversal of 630530 is 35036.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 516961 + 113569 = 719^2 + 337^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 630499 and 630508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685 + ... + 2024.

2⁶³⁰⁵³⁰ is an apocalyptic number.

630530 is a deficient number, since it is larger than the sum of its proper divisors (571510).

630530 is a wasteful number, since it uses less digits than its factorization.

630530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 630530 is about 794.0591917483. The cubic root of 630530 is about 85.7502217041.

Adding to 630530 its reverse (35036), we get a palindrome (665566).

The spelling of 630530 in words is "six hundred thirty thousand, five hundred thirty".