The country that matches these properties is Monaco 🇲🇨
- Without the clue "Its name has 6 letters", other countries are: San Marino, Liechtenstein, Qatar, and 4 more
- Without the clue "Has a population less than 3M", other countries are: Israel, Norway, Canada, and 3 more
- Without the clue "Its GDP per capita is greater than 40k USD", other countries are: Cyprus, Kosovo, Guyana, and 5 more