Is this a hidden Easter egg or the developer's lucky number?

[Sir Sinkalot]

I do wonder what are the odds that this fun little formula: CP = 3/2(N^2-3N+2) leads to this wonderful combination of numbers.

So let me put that into words for you:

"At 69 out of 69 cities, when you are missing 69 points for next slot, you are at exactly 6969 culture points."

 

[xFate]

easter egg found, time to wrap it up