630344 has 64 divisors (see below), whose sum is σ = 1512000. Its totient is φ = 241920.

The previous prime is 630319. The next prime is 630349. The reversal of 630344 is 443036.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (630349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21722 + ... + 21750.

It is an arithmetic number, because the mean of its divisors is an integer number (23625).

2⁶³⁰³⁴⁴ 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 630344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756000).

630344 is an abundant number, since it is smaller than the sum of its proper divisors (881656).

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

630344 is a wasteful number, since it uses less digits than its factorization.

630344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 630344 is about 793.9420633774. The cubic root of 630344 is about 85.7417890576.

The spelling of 630344 in words is "six hundred thirty thousand, three hundred forty-four".