80165 has 4 divisors (see below), whose sum is σ = 96204. Its totient is φ = 64128.

The previous prime is 80153. The next prime is 80167. The reversal of 80165 is 56108.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9409 + 70756 = 97^2 + 266^2 .

It is a cyclic number.

It is not a de Polignac number, because 80165 - 2⁴ = 80149 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8012 + ... + 8021.

It is an arithmetic number, because the mean of its divisors is an integer number (24051).

2⁸⁰¹⁶⁵ is an apocalyptic number.

It is an amenable number.

80165 is a deficient number, since it is larger than the sum of its proper divisors (16039).

80165 is a wasteful number, since it uses less digits than its factorization.

80165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16038.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 80165 is about 283.1342437785. The cubic root of 80165 is about 43.1182969348.

The spelling of 80165 in words is "eighty thousand, one hundred sixty-five".