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_2623498_5 (prod_code VARCHAR, episode__number VARCHAR)

### Question ###
What is the production code for episode #78?

### Accurate SQL ###

SELECT prod_code FROM table_2623498_5 WHERE episode__number = "78"