13644916 has 6 divisors (see below), whose sum is σ = 23878610. Its totient is φ = 6822456.

The previous prime is 13644913. The next prime is 13644937. The reversal of 13644916 is 61944631.

It can be written as a sum of positive squares in only one way, i.e., 12988816 + 656100 = 3604^2 + 810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1705611 + ... + 1705618.

Almost surely, 2^13644916 is an apocalyptic number.

It is an amenable number.

13644916 is a deficient number, since it is larger than the sum of its proper divisors (10233694).

13644916 is a wasteful number, since it uses less digits than its factorization.

13644916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411233 (or 3411231 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 13644916 is about 3693.9025433815. The cubic root of 13644916 is about 238.9591265455.

The spelling of 13644916 in words is "thirteen million, six hundred forty-four thousand, nine hundred sixteen".