How many words are there in a novel?

It is impossible to say

How long should a book be?  There is not an exact answer to this question.  It is impossible to say how many words should there be in a novel.  It obviously depends on the novel.  There are novels that have between 80000 and 90000 words or even 100000 words.  Specialists say that the novels that have less than 70000 words are too short.  On the contrary, the novels that have more than 110000 words are too long.