11564165 has 16 divisors (see below), whose sum is σ = 15094512. Its totient is φ = 8469504.

The previous prime is 11564143. The next prime is 11564167. The reversal of 11564165 is 56146511.

11564165 is digitally balanced in base 3, 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 8 ways, for example, as 2316484 + 9247681 = 1522^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 11564165 - 2¹² = 11560069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11564167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (943407).

Almost surely, 2^11564165 is an apocalyptic number.

It is an amenable number.

11564165 is a deficient number, since it is larger than the sum of its proper divisors (3530347).

11564165 is a wasteful number, since it uses less digits than its factorization.

11564165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736.

The product of its digits is 3600, while the sum is 29.

The square root of 11564165 is about 3400.6124448399. The cubic root of 11564165 is about 226.1368959418.

The spelling of 11564165 in words is "eleven million, five hundred sixty-four thousand, one hundred sixty-five".