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_17905 ( "Series number" text, "Episode number" real, "Date of first broadcast" text, "Total viewers" real, "Series average" real )

### Question ###
what is the episode number where the total viewers is 614000?

### Accurate SQL ###

SELECT MIN("Episode number") FROM table_17905 WHERE "Total viewers" = '614000'