text: 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_23242950_1 (no_in_season INTEGER, us_viewers__millions_ VARCHAR)
  ### Question:
  What's the season number of the episode originally seen by 6.64 million people in the US?
  ### Answer:
  SELECT MIN(no_in_season) FROM table_23242950_1 WHERE us_viewers__millions_ = "6.64"