84

84 < 83 | 85 >
Numbers 0 - 99
0	1	2	3	4	5	6	7	8	9
10	11	12	13	14	15	16	17	18	19
20	21	22	23	24	25	26	27	28	29
30	31	32	33	34	35	36	37	38	39
40	41	42	43	44	45	46	47	48	49
50	51	52	53	54	55	56	57	58	59
60	61	62	63	64	65	66	67	68	69
70	71	72	73	74	75	76	77	78	79
80	81	82	83	84	85	86	87	88	89
90	91	92	93	94	95	96	97	98	99

84 (eighty-four) is a positive integer following 83 and preceding 85. Its ordinal form is written "eighty-fourth" or 84th.

Properties

• 84 is an even composite number.
• 84 is the 7th tetrahedral number.

In chess

It is also the number of possible king moves in 4×4 minichess.

In googology

In Greek-based number-naming systems, 84 is associated with prefix "tetraoctaconta-", and with prefix "quattuoroctoginti-" in Latin systems.