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_1606824_1 (area_km_2 VARCHAR, pop_density_people_km_2 VARCHAR)
### Question:
Name the number of area km 2 for population density is 87
### Answer:
SELECT COUNT(area_km_2) FROM table_1606824_1 WHERE pop_density_people_km_2 = "87"