What Does 666 Mean?

According to the last book in the Bible, 666 is the number, or name, of the wild beast with seven heads and ten horns that comes out of the sea. (Revelation 13:​1, 17, 18) This beast is a symbol of the worldwide political system, which rules over “every tribe and people and tongue and nation.” (Revelation 13:7) The name 666 identifies the political system as a gross failure in God’s sight. How?