630844 has 12 divisors (see below), whose sum is σ = 1152144. Its totient is φ = 301664.

The previous prime is 630841. The next prime is 630863. The reversal of 630844 is 448036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630841) 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, 3337 + ... + 3520.

It is an arithmetic number, because the mean of its divisors is an integer number (96012).

2⁶³⁰⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

630844 is a deficient number, since it is larger than the sum of its proper divisors (521300).

630844 is a wasteful number, since it uses less digits than its factorization.

630844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884 (or 6882 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 630844 is about 794.2568853967. The cubic root of 630844 is about 85.7644537001.

The spelling of 630844 in words is "six hundred thirty thousand, eight hundred forty-four".