13686171 has 8 divisors (see below), whose sum is σ = 18557760. Its totient is φ = 8969352.

The previous prime is 13686133. The next prime is 13686191. The reversal of 13686171 is 17168631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13686171 - 2⁶ = 13686107 is a prime.

It is a super-2 number, since 2×13686171² = 374622553282482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13686121) 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 7 ways as a sum of consecutive naturals, for example, 38485 + ... + 38838.

It is an arithmetic number, because the mean of its divisors is an integer number (2319720).

Almost surely, 2^13686171 is an apocalyptic number.

13686171 is a deficient number, since it is larger than the sum of its proper divisors (4871589).

13686171 is an equidigital number, since it uses as much as digits as its factorization.

13686171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77385.

The product of its digits is 6048, while the sum is 33.

The square root of 13686171 is about 3699.4825313819. The cubic root of 13686171 is about 239.1997128571.

The spelling of 13686171 in words is "thirteen million, six hundred eighty-six thousand, one hundred seventy-one".