630504 has 80 divisors (see below), whose sum is σ = 2032800. Its totient is φ = 178848.

The previous prime is 630493. The next prime is 630521. The reversal of 630504 is 405036.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

630504 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 19 ways as a sum of consecutive naturals, for example, 4467 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (25410).

2⁶³⁰⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016400).

630504 is an abundant number, since it is smaller than the sum of its proper divisors (1402296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630504 is a wasteful number, since it uses less digits than its factorization.

630504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 630504 is about 794.0428200041. The cubic root of 630504 is about 85.7490430468.

The spelling of 630504 in words is "six hundred thirty thousand, five hundred four".