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_17901155_4 (viewers__millions_ VARCHAR, no_in_season VARCHAR)

### Question ###
How many million viewers watched episode 6?

### Accurate SQL ###

SELECT viewers__millions_ FROM table_17901155_4 WHERE no_in_season = 6