Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_20522228_2 (rank__overall_ VARCHAR, viewers__millions_ VARCHAR)
### Question:
What is overall rank when viewers are at 6.59 million?
### Answer:
SELECT rank__overall_ FROM table_20522228_2 WHERE viewers__millions_ = "6.59"