6638044 has 12 divisors (see below), whose sum is σ = 13276144. Its totient is φ = 2844864.

The previous prime is 6638029. The next prime is 6638057. The reversal of 6638044 is 4408366.

6638044 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6637997 and 6638015.

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, 118509 + ... + 118564.

Almost surely, 2^6638044 is an apocalyptic number.

It is an amenable number.

6638044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6638044 is a wasteful number, since it uses less digits than its factorization.

6638044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237084 (or 237082 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6638044 is about 2576.4401797830. The cubic root of 6638044 is about 187.9374697732.

The spelling of 6638044 in words is "six million, six hundred thirty-eight thousand, forty-four".