Sixty Seven is the 19th prime number(the next is 71), an irregular prime, a lucky primehttp://en.wikipedia.org/wiki/Lucky_prime, the sum of five consecutive primes (7 + 11 + 13 + 17 + 19), and a Heegner number.
Since 18! + 1 is divisible by 67 but 67 is not one more than a multiple of 18, 67 is a Pillai Prime