7165 has 4 divisors (see below), whose sum is σ = 8604. Its totient is φ = 5728.

The previous prime is 7159. The next prime is 7177. The reversal of 7165 is 5617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5617 = 41 ⋅137.

It can be written as a sum of positive squares in 2 ways, for example, as 4356 + 2809 = 66^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 7165 - 2⁹ = 6653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712 + ... + 721.

It is an arithmetic number, because the mean of its divisors is an integer number (2151).

2⁷¹⁶⁵ is an apocalyptic number.

It is an amenable number.

7165 is a deficient number, since it is larger than the sum of its proper divisors (1439).

7165 is a wasteful number, since it uses less digits than its factorization.

7165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438.

The product of its digits is 210, while the sum is 19.

The square root of 7165 is about 84.6463230152. The cubic root of 7165 is about 19.2784478471.

It can be divided in two parts, 71 and 65, that added together give a triangular number (136 = T₁₆).

The spelling of 7165 in words is "seven thousand, one hundred sixty-five".