166 (number)

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165 166 167
Cardinal one hundred sixty-six
Ordinal 166th
(one hundred and sixty-sixth)
Factorization 2 × 83
Divisors 1, 2, 83, 166
Roman numeral CLXVI
Binary 101001102
Ternary 200113
Quaternary 22124
Quinary 11315
Senary 4346
Octal 2468
Duodecimal 11A12
Hexadecimal A616
Vigesimal 8620
Base 36 4M36

166 (one hundred [and] sixty-six) is the natural number following 165 and preceding 167.

In mathematics[edit]

166 is an even number and a composite number. It is a centered triangular number.

Given 166, the Mertens function returns 0. 166 is a Smith number in base 10.

In astronomy[edit]

In the military[edit]

In sports[edit]

In transportation[edit]

In other fields[edit]

166 is also:

See also[edit]

External links[edit]