6605404 has 24 divisors (see below), whose sum is σ = 12665520. Its totient is φ = 2995584.

The previous prime is 6605399. The next prime is 6605411. The reversal of 6605404 is 4045066.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992 + ... + 4144.

It is an arithmetic number, because the mean of its divisors is an integer number (527730).

Almost surely, 2^6605404 is an apocalyptic number.

It is an amenable number.

6605404 is a deficient number, since it is larger than the sum of its proper divisors (6060116).

6605404 is a wasteful number, since it uses less digits than its factorization.

6605404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 6605404 is about 2570.0980526042. The cubic root of 6605404 is about 187.6289270318.

The spelling of 6605404 in words is "six million, six hundred five thousand, four hundred four".