13605445 has 8 divisors (see below), whose sum is σ = 18658944. Its totient is φ = 9329424.

The previous prime is 13605433. The next prime is 13605451. The reversal of 13605445 is 54450631.

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

It is a cyclic number.

It is not a de Polignac number, because 13605445 - 2⁵ = 13605413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 194329 + ... + 194398.

It is an arithmetic number, because the mean of its divisors is an integer number (2332368).

Almost surely, 2^13605445 is an apocalyptic number.

It is an amenable number.

13605445 is a deficient number, since it is larger than the sum of its proper divisors (5053499).

13605445 is an equidigital number, since it uses as much as digits as its factorization.

13605445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388739.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 13605445 is about 3688.5559505042. Note that the first 3 decimals coincide. The cubic root of 13605445 is about 238.7284896056.

The spelling of 13605445 in words is "thirteen million, six hundred five thousand, four hundred forty-five".