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_17416221_1 ( largest_city VARCHAR, population__2013_ VARCHAR )

### Question ###
what is the largest city where the population is 6620100?

### Accurate SQL ###

SELECT largest_city FROM table_17416221_1 WHERE population__2013_ = 6620100