- 86 is an even composite number.
- 86 is the largest known number n such that 2n does not contain the digit "0" in its decimal expansion.
In Greek-based number-naming systems, 86 is associated with prefix "hexaoctaconta-", and with prefix "sexoctoginti-" in Latin systems.
- OEIS, sequence A007377 (accessed 2020-11-13)
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