6623944 has 16 divisors (see below), whose sum is σ = 12505500. Its totient is φ = 3289152.

The previous prime is 6623927. The next prime is 6623959. The reversal of 6623944 is 4493266.

It can be written as a sum of positive squares in 2 ways, for example, as 6604900 + 19044 = 2570^2 + 138^2 .

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, 1587 + ... + 3970.

Almost surely, 2^6623944 is an apocalyptic number.

It is an amenable number.

6623944 is a deficient number, since it is larger than the sum of its proper divisors (5881556).

6623944 is a wasteful number, since it uses less digits than its factorization.

6623944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5712 (or 5708 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 6623944 is about 2573.7023914975. The cubic root of 6623944 is about 187.8043082179.

The spelling of 6623944 in words is "six million, six hundred twenty-three thousand, nine hundred forty-four".