2165796 has 18 divisors (see below), whose sum is σ = 5474742. Its totient is φ = 721920.

The previous prime is 2165773. The next prime is 2165809. The reversal of 2165796 is 6975612.

It can be written as a sum of positive squares in only one way, i.e., 2143296 + 22500 = 1464^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 60161 = 2165796 / (2 + 1 + 6 + 5 + 7 + 9 + 6).

It is an Ulam number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2165796.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30045 + ... + 30116.

2^2165796 is an apocalyptic number.

It is an amenable number.

2165796 is an abundant number, since it is smaller than the sum of its proper divisors (3308946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165796 is a wasteful number, since it uses less digits than its factorization.

2165796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60171 (or 60166 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 2165796 is about 1471.6643639091. The cubic root of 2165796 is about 129.3815994673.

The spelling of 2165796 in words is "two million, one hundred sixty-five thousand, seven hundred ninety-six".