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_84 (constructor VARCHAR, time_retired VARCHAR, laps VARCHAR, grid VARCHAR)

### Question ###
When grid is less than 7, laps are greater than 17, and time/retired is + 1:35.6, who is the constructor?

### Accurate SQL ###

SELECT constructor FROM table_name_84 WHERE laps > 17 AND grid < 7 AND time_retired = "+ 1:35.6"