2118065 has 12 divisors (see below), whose sum is σ = 2634996. Its totient is φ = 1633248.

The previous prime is 2118059. The next prime is 2118079. The reversal of 2118065 is 5608112.

It can be written as a sum of positive squares in 2 ways, for example, as 1385329 + 732736 = 1177^2 + 856^2 .

It is not a de Polignac number, because 2118065 - 2⁴ = 2118049 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2118065.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19742 + ... + 19848.

It is an arithmetic number, because the mean of its divisors is an integer number (219583).

2^2118065 is an apocalyptic number.

It is an amenable number.

2118065 is a deficient number, since it is larger than the sum of its proper divisors (516931).

2118065 is an equidigital number, since it uses as much as digits as its factorization.

2118065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2118065 is about 1455.3573444347. The cubic root of 2118065 is about 128.4240695618.

The spelling of 2118065 in words is "two million, one hundred eighteen thousand, sixty-five".