13605473 has 4 divisors (see below), whose sum is σ = 15549120. Its totient is φ = 11661828.

The previous prime is 13605469. The next prime is 13605479. The reversal of 13605473 is 37450631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37450631 = 139 ⋅269429.

It is a cyclic number.

It is not a de Polignac number, because 13605473 - 2² = 13605469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13605479) 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 3 ways as a sum of consecutive naturals, for example, 971813 + ... + 971826.

It is an arithmetic number, because the mean of its divisors is an integer number (3887280).

Almost surely, 2^13605473 is an apocalyptic number.

It is an amenable number.

13605473 is a deficient number, since it is larger than the sum of its proper divisors (1943647).

13605473 is an equidigital number, since it uses as much as digits as its factorization.

13605473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943646.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 13605473 is about 3688.5597460255. The cubic root of 13605473 is about 238.7286533732.

The spelling of 13605473 in words is "thirteen million, six hundred five thousand, four hundred seventy-three".