13608609 has 8 divisors (see below), whose sum is σ = 20736960. Its totient is φ = 7776336.

The previous prime is 13608607. The next prime is 13608611. The reversal of 13608609 is 90680631.

It is an interprime number because it is at equal distance from previous prime (13608607) and next prime (13608611).

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

It is not a de Polignac number, because 13608609 - 2¹ = 13608607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13608609.

It is not an unprimeable number, because it can be changed into a prime (13608601) 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, 323994 + ... + 324035.

It is an arithmetic number, because the mean of its divisors is an integer number (2592120).

Almost surely, 2^13608609 is an apocalyptic number.

It is an amenable number.

13608609 is a deficient number, since it is larger than the sum of its proper divisors (7128351).

13608609 is an equidigital number, since it uses as much as digits as its factorization.

13608609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648039.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 13608609 is about 3688.9848197031. The cubic root of 13608609 is about 238.7469939225.

The spelling of 13608609 in words is "thirteen million, six hundred eight thousand, six hundred nine".