6644349 has 24 divisors (see below), whose sum is σ = 10235680. Its totient is φ = 4304016.

The previous prime is 6644327. The next prime is 6644359. The reversal of 6644349 is 9434466.

6644349 is a `hidden beast` number, since 6 + 644 + 3 + 4 + 9 = 666.

It is not a de Polignac number, because 6644349 - 2⁹ = 6643837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8622 + ... + 9360.

Almost surely, 2^6644349 is an apocalyptic number.

It is an amenable number.

6644349 is a deficient number, since it is larger than the sum of its proper divisors (3591331).

6644349 is an equidigital number, since it uses as much as digits as its factorization.

6644349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 779 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6644349 is about 2577.6634768720. The cubic root of 6644349 is about 187.9969537005.

The spelling of 6644349 in words is "six million, six hundred forty-four thousand, three hundred forty-nine".