13668245 has 4 divisors (see below), whose sum is σ = 16401900. Its totient is φ = 10934592.

The previous prime is 13668227. The next prime is 13668247. The reversal of 13668245 is 54286631.

13668245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54286631 = 7 ⋅7755233.

It can be written as a sum of positive squares in 2 ways, for example, as 8994001 + 4674244 = 2999^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 13668245 - 2⁸ = 13667989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13668247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366820 + ... + 1366829.

It is an arithmetic number, because the mean of its divisors is an integer number (4100475).

Almost surely, 2^13668245 is an apocalyptic number.

It is an amenable number.

13668245 is a deficient number, since it is larger than the sum of its proper divisors (2733655).

13668245 is an equidigital number, since it uses as much as digits as its factorization.

13668245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733654.

The product of its digits is 34560, while the sum is 35.

The square root of 13668245 is about 3697.0589662595. The cubic root of 13668245 is about 239.0952334889.

The spelling of 13668245 in words is "thirteen million, six hundred sixty-eight thousand, two hundred forty-five".