67

67 (sixty-seven) is a positive integer following 66 and preceding 68. Its ordinal form is written "sixty-seventh" or 67th.
== Properties ==
* 67 is an .
* 67 is the third .MathWorld, Irregular PrimeOEIS A000928: Irregular primes: primes p such that at least one of the numerators of the Bernoulli numbers B_2, B_4, ..., B_{p-3} (A000367) is divisible by p
== In googology ==
In Greek-based number-naming systems, 67 is associated with prefix "heptahexaconta-", and with prefix "septemsexaginti-" in Latin systems.
== Sources ==
Category:Numbers
Category:Class 1
Category:Numbers 0-99
Category:Prime numbers
Category:Numbers with 1 to 2 digits