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_16471432_4 ( directed_by VARCHAR, series__number VARCHAR )

### Question ###
How many directors were there in total for the episode with series #62?

### Accurate SQL ###

SELECT COUNT(directed_by) FROM table_16471432_4 WHERE series__number = 62