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87 (eighty-seven) is a positive integer following 86 and preceding 88. Its ordinal form is written "eighty-seventh" or 87th.

Properties[]

87 is an odd composite number[1].

In googology[]

In Greek-based number-naming systems, 87 is associated with prefix "heptaoctaconta-", and with prefix "septemoctoginti-" in Latin systems.

87 is the last two digits of Graham's number, or any power tower of 3's where the height is at least 3.

In radio broadcasting[]

In the European Union and some other countries, the FM broadcast band starts at 87.5 MHz, but in most countries, the first usable carrier frequency is 87.6 MHz.

Sources[]

  1. OEIS, Sequence A002808 (accessed 2021-02-07)
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