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66 (sixty-six) is a positive integer following 65 and preceding 67. Its ordinal form is written "sixty-sixth" or 66th.

Properties Edit

66 is an even composite number.

66 is the 11th triangular number.

66 is a repdigit number.

In googology Edit

In Greek-based number-naming systems, 66 is associated with prefix "hexahexaconta-", and with prefix "sexasexaginti-" in Latin systems.

See alsoEdit

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