144 is the smallest number with exactly 15 divisors. 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144...
It is the 12th number of the Fibonacci sequence: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144...
Roman numeral - CXLIV
Binary (Base2) - 10010000
Octal (Base8) - 220
Duodecimal (Base12) - 100
Hexadecimal (Base16) - 90
It is a dozen dozens (aka. a gross)... and is the telephone number for directory enquiries in Israel.
In bases other than 10, the number 666 it doesn't look so special (or scary).
Roman numeral - DCLXVI
Binary (Base2) - 1010011010
Octal (Base8) - 1232
Hexadecimal (Base16) - 29A
Duodecimal (Base12) - 476
Base32 - KQ
Base36 - IIBase60 - 11 06
It is a member of the Indices of prime Padovan sequence, 3, 4, 5, 7, 8, 14, 19, 30, 37, 84, 128, 469, 666, 1262, 1573, 2003, 2210...
The Roman numeral representation of the number 666 (DCLXVI: 500 + 100 + 50 + 10 + 5 + 1) uses each of the Roman numeral symbols with values under 1,000 once , occurring in descending order of their respective values.
The word "apostates" in ancient Greek adds up to 666.
A alpha = 1
P pi = 80
O omicron = 70
ST stigma = 6
A alpha = 1
T tau = 300
E eta = 8
S sigma = 200
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666
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The fear of the number 666 is called "hexakosioihexekontahexaphobia".