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_name_66 (genes INTEGER, species VARCHAR)
### Question:
What is the lowest number of genes in Rubrobacter Xylanophilus?
### Answer:
SELECT MIN(genes) FROM table_name_66 WHERE species = "rubrobacter xylanophilus"