6644244 has 12 divisors (see below), whose sum is σ = 15503264. Its totient is φ = 2214744.

The previous prime is 6644227. The next prime is 6644269. The reversal of 6644244 is 4424466.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276832 + ... + 276855.

Almost surely, 2^6644244 is an apocalyptic number.

It is an amenable number.

6644244 is an abundant number, since it is smaller than the sum of its proper divisors (8859020).

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

6644244 is a wasteful number, since it uses less digits than its factorization.

6644244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553694 (or 553692 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 6644244 is about 2577.6431095092. The cubic root of 6644244 is about 187.9959633961.

The spelling of 6644244 in words is "six million, six hundred forty-four thousand, two hundred forty-four".