CREATE TABLE table_49916 ("Urban area  ( locality ) " TEXT, "Population" FLOAT, "Land area  ( hectares ) " FLOAT, "Density  ( inh./km\\u00b2 ) " FLOAT, "Code" FLOAT)

How many codes have a density of 621.68, and a Land area (hectares) larger than 75.28?
SELECT SUM("Code") FROM table_49916 WHERE "Density (inh./km\u00b2)" = '621.68' AND "Land area (hectares)" > '75.28'
SELECT SUM("Code") FROM "table_49916" WHERE "Density (inh./km\u00b2)" = '621.68' AND "Land area (hectares)" > '75.28'