2117065 has 4 divisors (see below), whose sum is σ = 2540484. Its totient is φ = 1693648.

The previous prime is 2117053. The next prime is 2117077. The reversal of 2117065 is 5607112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2117053) and next prime (2117077).

It can be written as a sum of positive squares in 2 ways, for example, as 915849 + 1201216 = 957^2 + 1096^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117065 - 2¹¹ = 2115017 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211702 + ... + 211711.

It is an arithmetic number, because the mean of its divisors is an integer number (635121).

2^2117065 is an apocalyptic number.

It is an amenable number.

2117065 is a deficient number, since it is larger than the sum of its proper divisors (423419).

2117065 is an equidigital number, since it uses as much as digits as its factorization.

2117065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423418.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 2117065 is about 1455.0137456395. The cubic root of 2117065 is about 128.4038554692.

The spelling of 2117065 in words is "two million, one hundred seventeen thousand, sixty-five".