13845565 has 8 divisors (see below), whose sum is σ = 17592120. Its totient is φ = 10424832.

The previous prime is 13845541. The next prime is 13845571. The reversal of 13845565 is 56554831.

13845565 is nontrivially palindromic in base 16.

13845565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1776889 + 12068676 = 1333^2 + 3474^2 .

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 13845565 - 2¹⁵ = 13812797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81360 + ... + 81529.

It is an arithmetic number, because the mean of its divisors is an integer number (2199015).

Almost surely, 2^13845565 is an apocalyptic number.

It is an amenable number.

13845565 is a deficient number, since it is larger than the sum of its proper divisors (3746555).

13845565 is a wasteful number, since it uses less digits than its factorization.

13845565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162911.

The product of its digits is 72000, while the sum is 37.

The square root of 13845565 is about 3720.9629130106. The cubic root of 13845565 is about 240.1247326165.

The spelling of 13845565 in words is "thirteen million, eight hundred forty-five thousand, five hundred sixty-five".