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_75 ( week INTEGER, attendance INTEGER )

### Question ###
What is the average week number of all the matches where less than 22,604 people attended?

### Accurate SQL ###

SELECT AVG(week) FROM table_name_75 WHERE attendance < 22 OFFSET 604