86 is the natural number following 85 and preceding 87

Cardinal	eighty-six
Ordinal	86th (eighty-sixth)
Factorization
Roman numeral	LXXXVI
Binary	01010110
Hexadecimal	56

In mathematics

86 is a nontotient, a noncototient and a self number.

In astronomy

• Messier object M86, a magnitude 11.0 lenticular galaxy in the constellation Virgo
• The New General Catalogue object NGC 86 , a galaxy in the constellation Andromeda
• The Saros number of
  • the solar eclipse series which began on -69 April 6 and ended on 11931 May 2. The duration of Saros series 86 was 1262.1 years, and it contained 71 solar eclipses.
  • the lunar eclipse series which began on -74 July 13 and ended on 1224 August 30. The duration of Saros series 86 was 1298.1 years, and it contained 73 lunar eclipses.

In other fields

Eighty-six is also:

• the atomic number of radon
• the model number of F-86 Sabre and Ilyushin Il-86 aircraft
• the model number of CPM-86 operating system
• part of the model number of the X86 microprocessors
• used as a verb, to "eighty-six" means to "ignore" or "get rid of". This may originally be Cockney rhyming slang for the word "nix".
• In the TV series Get Smart, the principal character Maxwell Smart was known as Agent 86.
• the name of the band The Eighty-Six
• the number of the French department Vienne
• the designation of two highways named Interstate 86, one in Idaho and the other in Pennsylvania and New York.
• the code for international direct dial phone calls to China
• One of five ISBN Group Identifiers for books published in Serbia and Montenegro
• Used to refer to the popular Toyota AE86 Sprinter Trueno
• The year AD 86, 86 BC, or 1986.