2566165 has 16 divisors (see below), whose sum is σ = 3549312. Its totient is φ = 1744704.

The previous prime is 2566163. The next prime is 2566171. The reversal of 2566165 is 5616652.

It is a cyclic number.

It is not a de Polignac number, because 2566165 - 2¹ = 2566163 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 (2566163) 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, 5262 + ... + 5728.

It is an arithmetic number, because the mean of its divisors is an integer number (221832).

2^2566165 is an apocalyptic number.

It is an amenable number.

2566165 is a deficient number, since it is larger than the sum of its proper divisors (983147).

2566165 is a wasteful number, since it uses less digits than its factorization.

2566165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its digits is 10800, while the sum is 31.

The square root of 2566165 is about 1601.9254040061. The cubic root of 2566165 is about 136.9078002194.

The spelling of 2566165 in words is "two million, five hundred sixty-six thousand, one hundred sixty-five".