86 (number)

86

← 80 81 82 83 84 85 86 87 88 89 →

List of numbers — Integers

← 0 10 20 30 40 50 60 70 80 90 →

eighty-six

86th
(eighty-sixth)

2 × 43

1, 2, 43, 86

LXXXVI

1010110₂

10012₃

1112₄

321₅

222₆

126₈

72₁₂

56₁₆

46₂₀

2E₃₆

86 (eighty-six) is the natural number following 85 and preceding 87.

86 is:

It appears in the Padovan sequence, preceded by the terms 37, 49, 65 (it is the sum of the first two of these).

The aliquot sum of 86 is 46 within the aliquot sequence (86,46,26,16,15,9,4,3,1,0) 86 being the 17th composite number in the 3-aliquot tree.

It is conjectured that 86 is the largest n for which the decimal expansion of 2ⁿ contains no 0.

86 = (8 × 6 = 48) + (4 × 8 = 32) + (3 × 2 = 6). That is, 86 is equal to the sum of the numbers formed in calculating its multiplicative persistence.

To 86 something means "be out of" an item (e.g., restaurants) or banned from an establishment (e.g., casino.) The origin of the phrase is unclear, although the first known recorded instance of the phrase is from a 1944 book.

Eighty-six can also refer to:

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