624404 has 24 divisors (see below), whose sum is σ = 1245888. Its totient is φ = 271040.

The previous prime is 624401. The next prime is 624419. The reversal of 624404 is 404426.

It is a pancake number, because a pancake can be divided into 624404 parts by 1117 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704 + ... + 1320.

It is an arithmetic number, because the mean of its divisors is an integer number (51912).

2⁶²⁴⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

624404 is a deficient number, since it is larger than the sum of its proper divisors (621484).

624404 is a wasteful number, since it uses less digits than its factorization.

624404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 624404 is about 790.1923816388. The cubic root of 624404 is about 85.4716114728.

The spelling of 624404 in words is "six hundred twenty-four thousand, four hundred four".