6644841 has 24 divisors (see below), whose sum is σ = 10916640. Its totient is φ = 3572352.

The previous prime is 6644837. The next prime is 6644843. The reversal of 6644841 is 1484466.

It is not a de Polignac number, because 6644841 - 2² = 6644837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644843) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1170 + ... + 3828.

It is an arithmetic number, because the mean of its divisors is an integer number (454860).

Almost surely, 2^6644841 is an apocalyptic number.

It is an amenable number.

6644841 is a deficient number, since it is larger than the sum of its proper divisors (4271799).

6644841 is a wasteful number, since it uses less digits than its factorization.

6644841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693 (or 2686 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 6644841 is about 2577.7589103716. The cubic root of 6644841 is about 188.0015938449.

The spelling of 6644841 in words is "six million, six hundred forty-four thousand, eight hundred forty-one".