The ratio of the circumference of a circle to its diameter is called pi. In the Greek alphabet P is the sixteenth letter.
C = P x D
P = 3.14159 26535 89793 23846 ———————-360———————- ———————
Pi has been calculated to over 50 billion digits, but guess what the 360th digit is? The 359th digit is 3, the 360th is 6 and the 361st digit is 0. “360” is perfectly centered over the 360th digit (Monte Zerger, “The Magic of Pi”, 1979). The circle had been divided into 360 degrees way before modern man could calculate the number of digits as high as 360.