6624404 has 6 divisors (see below), whose sum is σ = 11592714. Its totient is φ = 3312200.

The previous prime is 6624379. The next prime is 6624413. The reversal of 6624404 is 4044266.

It can be written as a sum of positive squares in only one way, i.e., 6240004 + 384400 = 2498^2 + 620^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828047 + ... + 828054.

It is an arithmetic number, because the mean of its divisors is an integer number (1932119).

Almost surely, 2^6624404 is an apocalyptic number.

It is an amenable number.

6624404 is a deficient number, since it is larger than the sum of its proper divisors (4968310).

6624404 is a wasteful number, since it uses less digits than its factorization.

6624404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656105 (or 1656103 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 6624404 is about 2573.7917553679. The cubic root of 6624404 is about 187.8086554760.

The spelling of 6624404 in words is "six million, six hundred twenty-four thousand, four hundred four".