11165665 has 16 divisors (see below), whose sum is σ = 15383808. Its totient is φ = 7621056.

The previous prime is 11165659. The next prime is 11165677. The reversal of 11165665 is 56656111.

It is a cyclic number.

It is not a de Polignac number, because 11165665 - 2³ = 11165657 is a prime.

It is a Duffinian number.

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, 8599 + ... + 9811.

It is an arithmetic number, because the mean of its divisors is an integer number (961488).

Almost surely, 2^11165665 is an apocalyptic number.

It is an amenable number.

11165665 is a deficient number, since it is larger than the sum of its proper divisors (4218143).

11165665 is a wasteful number, since it uses less digits than its factorization.

11165665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its digits is 5400, while the sum is 31.

The square root of 11165665 is about 3341.5063968216. The cubic root of 11165665 is about 223.5089223316.

The spelling of 11165665 in words is "eleven million, one hundred sixty-five thousand, six hundred sixty-five".