13684219 has 2 divisors, whose sum is σ = 13684220. Its totient is φ = 13684218.

The previous prime is 13684217. The next prime is 13684267. The reversal of 13684219 is 91248631.

It is a weak prime.

It is an emirp because it is prime and its reverse (91248631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13684219 - 2¹ = 13684217 is a prime.

It is a super-2 number, since 2×13684219² = 374515699279922, which contains 22 as substring.

Together with 13684217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13684217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6842109 + 6842110.

It is an arithmetic number, because the mean of its divisors is an integer number (6842110).

Almost surely, 2^13684219 is an apocalyptic number.

13684219 is a deficient number, since it is larger than the sum of its proper divisors (1).

13684219 is an equidigital number, since it uses as much as digits as its factorization.

13684219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 13684219 is about 3699.2187012936. The cubic root of 13684219 is about 239.1883403059.

The spelling of 13684219 in words is "thirteen million, six hundred eighty-four thousand, two hundred nineteen".