13665244 has 6 divisors (see below), whose sum is σ = 23914184. Its totient is φ = 6832620.

The previous prime is 13665163. The next prime is 13665257. The reversal of 13665244 is 44256631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1708152 + ... + 1708159.

Almost surely, 2^13665244 is an apocalyptic number.

It is an amenable number.

13665244 is a deficient number, since it is larger than the sum of its proper divisors (10248940).

13665244 is a wasteful number, since it uses less digits than its factorization.

13665244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416315 (or 3416313 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 13665244 is about 3696.6530808287. The cubic root of 13665244 is about 239.0777336242.

The spelling of 13665244 in words is "thirteen million, six hundred sixty-five thousand, two hundred forty-four".