CREATE TABLE table_2501754_4 (episode__number NUMBER, viewing_figures_millions VARCHAR2, prod_code VARCHAR2)

What is the lowest episode number with 6.19 million viewers and a production code of icec487y?
SELECT MIN(episode__number) FROM table_2501754_4 WHERE viewing_figures_millions = "6.19" AND prod_code = "ICEC487Y"
SELECT MIN("episode__number") FROM "table_2501754_4" WHERE "6.19" = "viewing_figures_millions" AND "ICEC487Y" = "prod_code"