13665163 has 2 divisors, whose sum is σ = 13665164. Its totient is φ = 13665162.

The previous prime is 13665143. The next prime is 13665257. The reversal of 13665163 is 36156631.

13665163 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13665163 is a prime.

It is not a weakly prime, because it can be changed into another prime (13665103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6832581 + 6832582.

It is an arithmetic number, because the mean of its divisors is an integer number (6832582).

Almost surely, 2^13665163 is an apocalyptic number.

13665163 is a deficient number, since it is larger than the sum of its proper divisors (1).

13665163 is an equidigital number, since it uses as much as digits as its factorization.

13665163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 13665163 is about 3696.6421249561. The cubic root of 13665163 is about 239.0772612498.

The spelling of 13665163 in words is "thirteen million, six hundred sixty-five thousand, one hundred sixty-three".