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_1590967_2 ( episode_number INTEGER, air_date VARCHAR )

### Question ###
Name the most episode numbers of 6 january 2006

### Accurate SQL ###

SELECT MAX(episode_number) FROM table_1590967_2 WHERE air_date = "6 January 2006"