6631444 has 6 divisors (see below), whose sum is σ = 11605034. Its totient is φ = 3315720.

The previous prime is 6631421. The next prime is 6631447. The reversal of 6631444 is 4441366.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6563844 + 67600 = 2562^2 + 260^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828927 + ... + 828934.

Almost surely, 2^6631444 is an apocalyptic number.

It is an amenable number.

6631444 is a deficient number, since it is larger than the sum of its proper divisors (4973590).

6631444 is a wasteful number, since it uses less digits than its factorization.

6631444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657865 (or 1657863 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 6631444 is about 2575.1590242158. The cubic root of 6631444 is about 187.8751623314.

The spelling of 6631444 in words is "six million, six hundred thirty-one thousand, four hundred forty-four".