Vienna is about 777 times smaller than Cote d'Ivoire.

Cote d'Ivoire is approximately 322,463 sq km, while Vienna is approximately 415 sq km, making Vienna 0.13% the size of Cote d'Ivoire.
Tip: This to-scale comparison of Cote d'Ivoire vs. Vienna uses the Mercator projection, which distorts the size of regions near the poles.