2165612 has 12 divisors (see below), whose sum is σ = 3825360. Its totient is φ = 1072656.

The previous prime is 2165599. The next prime is 2165617.

2165612 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2165617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (318780).

2^2165612 is an apocalyptic number.

It is an amenable number.

2165612 is a deficient number, since it is larger than the sum of its proper divisors (1659748).

2165612 is a wasteful number, since it uses less digits than its factorization.

2165612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080 (or 5078 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 2165612 is about 1471.6018483272. The cubic root of 2165612 is about 129.3779353967.

The spelling of 2165612 in words is "two million, one hundred sixty-five thousand, six hundred twelve".