Excuse me, but the "digital root" thing about the circle is complete nonsense. Degrees are an arbitrary unit -- by definition the full circle has 360 of them, but that number was chosen by human beings and there's no "deeper meaning" to it. By the way, in mathematics you usually measure angles in radians, not degrees (in that case a full circle equals 2 * pi).

And regarding your large collection of occurrences of the number 3: You could play the same game with other numbers.