are there 73 books in the bible?

Are there more than 66 books in the bible?

It depends. Here's a collection of apocrypha The Apocrypha Index

Depends, in protestant bibles there are 66, in the Catholic bible it is 73.

this is because the early church with it's large number of bi-ingual Jews and greek gentiles decided to adopt the Septuagint. After the reformation they removed 7 of these books from thier canon that they decided were questionable (Apocrypha). The New Testament is the same between the two though