6664404 has 24 divisors (see below), whose sum is σ = 15815520. Its totient is φ = 2183584.

The previous prime is 6664387. The next prime is 6664417. The reversal of 6664404 is 4044666.

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, 3999 + ... + 5414.

It is an arithmetic number, because the mean of its divisors is an integer number (658980).

Almost surely, 2^6664404 is an apocalyptic number.

It is an amenable number.

6664404 is an abundant number, since it is smaller than the sum of its proper divisors (9151116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6664404 is a wasteful number, since it uses less digits than its factorization.

6664404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479 (or 9477 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 6664404 is about 2581.5506967712. The cubic root of 6664404 is about 188.1859108583.

The spelling of 6664404 in words is "six million, six hundred sixty-four thousand, four hundred four".