13605243 has 8 divisors (see below), whose sum is σ = 18562368. Its totient is φ = 8859144.

The previous prime is 13605211. The next prime is 13605247. The reversal of 13605243 is 34250631.

It is a happy number.

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

It is not a de Polignac number, because 13605243 - 2⁵ = 13605211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13605247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52605 + ... + 52862.

It is an arithmetic number, because the mean of its divisors is an integer number (2320296).

Almost surely, 2^13605243 is an apocalyptic number.

13605243 is a deficient number, since it is larger than the sum of its proper divisors (4957125).

13605243 is a wasteful number, since it uses less digits than its factorization.

13605243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105513.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 13605243 is about 3688.5285684132. The cubic root of 13605243 is about 238.7273081327.

Adding to 13605243 its reverse (34250631), we get a palindrome (47855874).

The spelling of 13605243 in words is "thirteen million, six hundred five thousand, two hundred forty-three".