6646004 has 12 divisors (see below), whose sum is σ = 11675328. Its totient is φ = 3310200.

The previous prime is 6646001. The next prime is 6646019. The reversal of 6646004 is 4006466.

It is a super-3 number, since 3×6646004³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982 + ... + 4149.

It is an arithmetic number, because the mean of its divisors is an integer number (972944).

Almost surely, 2^6646004 is an apocalyptic number.

It is an amenable number.

6646004 is a deficient number, since it is larger than the sum of its proper divisors (5029324).

6646004 is a wasteful number, since it uses less digits than its factorization.

6646004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406 (or 6404 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 6646004 is about 2577.9844840495. The cubic root of 6646004 is about 188.0125614060.

The spelling of 6646004 in words is "six million, six hundred forty-six thousand, four".