83 and preceding 85. Its ordinal form is written "eighty-fourth" or 84th.84 (eighty-four) is a positive integer following
84 is the 7th tetrahedral number.
In chess Edit
It is also the number of possible king moves in 4×4 minichess.
In googology Edit
In Greek-based number-naming systems, 84 is associated with prefix "tetraoctaconta-", and with prefix "quattuoroctoginti-" in Latin