13327565 has 4 divisors (see below), whose sum is σ = 15993084. Its totient is φ = 10662048.

The previous prime is 13327543. The next prime is 13327577. The reversal of 13327565 is 56572331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9815689 + 3511876 = 3133^2 + 1874^2 .

It is a cyclic number.

It is not a de Polignac number, because 13327565 - 2²⁰ = 12278989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332752 + ... + 1332761.

It is an arithmetic number, because the mean of its divisors is an integer number (3998271).

Almost surely, 2^13327565 is an apocalyptic number.

It is an amenable number.

13327565 is a deficient number, since it is larger than the sum of its proper divisors (2665519).

13327565 is an equidigital number, since it uses as much as digits as its factorization.

13327565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665518.

The product of its digits is 18900, while the sum is 32.

The square root of 13327565 is about 3650.6937696827. The cubic root of 13327565 is about 237.0920197898.

Adding to 13327565 its reverse (56572331), we get a palindrome (69899896).

The spelling of 13327565 in words is "thirteen million, three hundred twenty-seven thousand, five hundred sixty-five".