Arkansas is about 1.6 times bigger than Azerbaijan.

Azerbaijan is approximately 86,600 sq km, while Arkansas is approximately 134,856 sq km, making Arkansas 56% larger than Azerbaijan. Meanwhile, the population of Azerbaijan is ~10.4 million people (7.4 million fewer people live in Arkansas).
Tip: This to-scale comparison of Azerbaijan vs. Arkansas uses the Mercator projection, which distorts the size of regions near the poles.