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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.

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.

87