13684166 has 4 divisors (see below), whose sum is σ = 20526252. Its totient is φ = 6842082.

The previous prime is 13684159. The next prime is 13684171. The reversal of 13684166 is 66148631.

13684166 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: 66148631 = 67 ⋅987293.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421040 + ... + 3421043.

It is an arithmetic number, because the mean of its divisors is an integer number (5131563).

Almost surely, 2^13684166 is an apocalyptic number.

13684166 is a deficient number, since it is larger than the sum of its proper divisors (6842086).

13684166 is an equidigital number, since it uses as much as digits as its factorization.

13684166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842085.

The product of its digits is 20736, while the sum is 35.

The square root of 13684166 is about 3699.2115376118. The cubic root of 13684166 is about 239.1880315074.

The spelling of 13684166 in words is "thirteen million, six hundred eighty-four thousand, one hundred sixty-six".