13601345 has 4 divisors (see below), whose sum is σ = 16321620. Its totient is φ = 10881072.

The previous prime is 13601339. The next prime is 13601363. The reversal of 13601345 is 54310631.

It is a happy number.

It is a Cunningham number, because it is equal to 3688²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54310631 = 17 ⋅3194743.

It can be written as a sum of positive squares in 2 ways, for example, as 4892944 + 8708401 = 2212^2 + 2951^2 .

It is a cyclic number.

It is not a de Polignac number, because 13601345 - 2¹² = 13597249 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13601345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360130 + ... + 1360139.

It is an arithmetic number, because the mean of its divisors is an integer number (4080405).

Almost surely, 2^13601345 is an apocalyptic number.

It is an amenable number.

13601345 is a deficient number, since it is larger than the sum of its proper divisors (2720275).

13601345 is an equidigital number, since it uses as much as digits as its factorization.

13601345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720274.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13601345 is about 3688.0001355748. Note that the first 3 decimals coincide. The cubic root of 13601345 is about 238.7045069246.

Adding to 13601345 its reverse (54310631), we get a palindrome (67911976).

The spelling of 13601345 in words is "thirteen million, six hundred one thousand, three hundred forty-five".