13676209 has 2 divisors, whose sum is σ = 13676210. Its totient is φ = 13676208.

The previous prime is 13676203. The next prime is 13676231. The reversal of 13676209 is 90267631.

13676209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 2433600 = 3353^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 13676209 - 2¹⁹ = 13151921 is a prime.

It is a super-2 number, since 2×13676209² = 374077385223362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13676203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6838104 + 6838105.

It is an arithmetic number, because the mean of its divisors is an integer number (6838105).

Almost surely, 2^13676209 is an apocalyptic number.

It is an amenable number.

13676209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13676209 is an equidigital number, since it uses as much as digits as its factorization.

13676209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 13676209 is about 3698.1358817653. The cubic root of 13676209 is about 239.1416619010.

The spelling of 13676209 in words is "thirteen million, six hundred seventy-six thousand, two hundred nine".