87 may refer to: *

87 (number) 87 (eighty-seven) is the natural number following 86 (number), 86 and preceding 88 (number), 88. In mathematics 87 is: * the sum of the squares of the first four primes (87 = 22 + 32 + 52 + 72). * the sum of the sums of the divisors of the first ...

* one of the years

87 BC __NOTOC__ Year 87 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Octavius and Cinna/Merula (or, less frequently, year 667 ''Ab urbe condita'') and the Second Year of Houyuan. The denomi ...

AD 87 AD 87 ( LXXXVII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Saturninus (or, less frequently, year 840 ''Ab urbe cond ...

, 1987, 2087, etc. * Atomic number 87: francium * Intel 8087, a floating-point coprocessor

See also