2165364 has 18 divisors (see below), whose sum is σ = 5473650. Its totient is φ = 721776.

The previous prime is 2165357. The next prime is 2165393. The reversal of 2165364 is 4635612.

2165364 is a `hidden beast` number, since 2 + 1 + 653 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 501264 = 1290^2 + 708^2 .

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

It is a congruent number.

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, 30039 + ... + 30110.

2^2165364 is an apocalyptic number.

It is an amenable number.

2165364 is an abundant number, since it is smaller than the sum of its proper divisors (3308286).

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

2165364 is a wasteful number, since it uses less digits than its factorization.

2165364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60159 (or 60154 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2165364 is about 1471.5175839928. The cubic root of 2165364 is about 129.3729965383.

The spelling of 2165364 in words is "two million, one hundred sixty-five thousand, three hundred sixty-four".