80689 has 4 divisors (see below), whose sum is σ = 92224. Its totient is φ = 69156.

The previous prime is 80687. The next prime is 80701. The reversal of 80689 is 98608.

80689 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80689 - 2¹ = 80687 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 80689.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80681) 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, 5757 + ... + 5770.

It is an arithmetic number, because the mean of its divisors is an integer number (23056).

2⁸⁰⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

80689 is a deficient number, since it is larger than the sum of its proper divisors (11535).

80689 is a wasteful number, since it uses less digits than its factorization.

80689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11534.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 80689 is about 284.0580926501. The cubic root of 80689 is about 43.2120408252.

The spelling of 80689 in words is "eighty thousand, six hundred eighty-nine".