11561065 has 16 divisors (see below), whose sum is σ = 14572800. Its totient is φ = 8788032.

The previous prime is 11561027. The next prime is 11561087. The reversal of 11561065 is 56016511.

11561065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11561065 - 2⁹ = 11560553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26116 + ... + 26554.

It is an arithmetic number, because the mean of its divisors is an integer number (910800).

Almost surely, 2^11561065 is an apocalyptic number.

It is an amenable number.

11561065 is a deficient number, since it is larger than the sum of its proper divisors (3011735).

11561065 is a wasteful number, since it uses less digits than its factorization.

11561065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 11561065 is about 3400.1566140400. The cubic root of 11561065 is about 226.1166873340.

Adding to 11561065 its reverse (56016511), we get a palindrome (67577576).

The spelling of 11561065 in words is "eleven million, five hundred sixty-one thousand, sixty-five".