The secret about number 67 is that its a prime number and is only divisible by 1 and itself.
It is the smallest number which is both palindromic in base 5 or 6.
It is the sum of five consecutive primes: 7 + 11 + 13 + 17 + 19.
With just 12 cuts it is possible to divide a pizza into 67 tiny pieces.
Hope i helped u:)