80791 has 4 divisors (see below), whose sum is σ = 81432. Its totient is φ = 80152.

The previous prime is 80789. The next prime is 80803. The reversal of 80791 is 19708.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80791 - 2¹ = 80789 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80701) by changing a digit.

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, 61 + ... + 406.

It is an arithmetic number, because the mean of its divisors is an integer number (20358).

2⁸⁰⁷⁹¹ is an apocalyptic number.

80791 is a deficient number, since it is larger than the sum of its proper divisors (641).

80791 is a wasteful number, since it uses less digits than its factorization.

80791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 80791 is about 284.2375766854. The cubic root of 80791 is about 43.2302414565.

It can be divided in two parts, 807 and 91, that multiplied together give a palindrome (73437).

The spelling of 80791 in words is "eighty thousand, seven hundred ninety-one".