624004 has 12 divisors (see below), whose sum is σ = 1107484. Its totient is φ = 307584.

The previous prime is 623989. The next prime is 624007. The reversal of 624004 is 400426.

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 462400 = 402^2 + 680^2 .

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (624007) by changing a digit.

624004 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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777 + ... + 1360.

2⁶²⁴⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

624004 is a deficient number, since it is larger than the sum of its proper divisors (483480).

624004 is a wasteful number, since it uses less digits than its factorization.

624004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 624004 is about 789.9392381696. The cubic root of 624004 is about 85.4533562258.

The spelling of 624004 in words is "six hundred twenty-four thousand, four".