13608013 has 2 divisors, whose sum is σ = 13608014. Its totient is φ = 13608012.

The previous prime is 13607981. The next prime is 13608029. The reversal of 13608013 is 31080631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11923209 + 1684804 = 3453^2 + 1298^2 .

It is a cyclic number.

It is not a de Polignac number, because 13608013 - 2⁵ = 13607981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13608113) 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 as a sum of consecutive naturals, namely, 6804006 + 6804007.

It is an arithmetic number, because the mean of its divisors is an integer number (6804007).

Almost surely, 2^13608013 is an apocalyptic number.

It is an amenable number.

13608013 is a deficient number, since it is larger than the sum of its proper divisors (1).

13608013 is an equidigital number, since it uses as much as digits as its factorization.

13608013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13608013 is about 3688.9040377868. The cubic root of 13608013 is about 238.7435084992.

Adding to 13608013 its reverse (31080631), we get a palindrome (44688644).

The spelling of 13608013 in words is "thirteen million, six hundred eight thousand, thirteen".