13663171 has 4 divisors (see below), whose sum is σ = 13696200. Its totient is φ = 13630144.

The previous prime is 13663159. The next prime is 13663183. The reversal of 13663171 is 17136631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17136631 = 71 ⋅241361.

It is an interprime number because it is at equal distance from previous prime (13663159) and next prime (13663183).

It is a cyclic number.

It is not a de Polignac number, because 13663171 - 2¹⁵ = 13630403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13663271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15886 + ... + 16723.

It is an arithmetic number, because the mean of its divisors is an integer number (3424050).

Almost surely, 2^13663171 is an apocalyptic number.

13663171 is a deficient number, since it is larger than the sum of its proper divisors (33029).

13663171 is an equidigital number, since it uses as much as digits as its factorization.

13663171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33028.

The product of its digits is 2268, while the sum is 28.

The square root of 13663171 is about 3696.3726814270. The cubic root of 13663171 is about 239.0656437509.

The spelling of 13663171 in words is "thirteen million, six hundred sixty-three thousand, one hundred seventy-one".