3681444 has 24 divisors (see below), whose sum is σ = 9251200. Its totient is φ = 1132704.

The previous prime is 3681443. The next prime is 3681451. The reversal of 3681444 is 4441863.

3681444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3681443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11644 + ... + 11955.

Almost surely, 2^3681444 is an apocalyptic number.

It is an amenable number.

3681444 is an abundant number, since it is smaller than the sum of its proper divisors (5569756).

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

3681444 is a wasteful number, since it uses less digits than its factorization.

3681444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23619 (or 23617 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 3681444 is about 1918.7089409288. The cubic root of 3681444 is about 154.4090435610.

The spelling of 3681444 in words is "three million, six hundred eighty-one thousand, four hundred forty-four".