Alaska is about 663 times bigger than Comoros.

Comoros is approximately 2,235 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 66,180% larger than Comoros. Meanwhile, the population of Comoros is ~876,437 people (166,206 fewer people live in Alaska).
Tip: This to-scale comparison of Comoros vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.