13436609 has 4 divisors (see below), whose sum is σ = 13870080. Its totient is φ = 13003140.

The previous prime is 13436603. The next prime is 13436617. The reversal of 13436609 is 90663431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13436609 - 2⁴ = 13436593 is a prime.

It is a super-2 number, since 2×13436609² = 361084922837762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13436603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216689 + ... + 216750.

It is an arithmetic number, because the mean of its divisors is an integer number (3467520).

Almost surely, 2^13436609 is an apocalyptic number.

It is an amenable number.

13436609 is a deficient number, since it is larger than the sum of its proper divisors (433471).

13436609 is an equidigital number, since it uses as much as digits as its factorization.

13436609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433470.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 13436609 is about 3665.5980412478. The cubic root of 13436609 is about 237.7368805562.

The spelling of 13436609 in words is "thirteen million, four hundred thirty-six thousand, six hundred nine".