What was the lowest 2011 Census population of an area with a land area larger than 908,607.67 km²?
CREATE TABLE "listing" (
  "rank" real,
  "name" text,
  "population_2011_census" real,
  "percent_of_national_population" text,
  "pct_growth_2006_11" text,
  "land_area_km" real,
  "population_density_km_2" real,
  "house_of_commons_seats" real,
  "house_of_commons_seats_pct" text,
  "2013_population_july_est" real
);
SELECT MIN("population_2011_census") FROM "listing" WHERE "land_area_km">'908,607.67';