Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_69 ( rating INTEGER, viewers__m_ VARCHAR, overall_rank VARCHAR )

### Question ###
What is the rating of the episode with 13.47 million viewers and overall rank larger than 6?

### Accurate SQL ###

SELECT SUM(rating) FROM table_name_69 WHERE viewers__m_ = 13.47 AND overall_rank > 6