69 (number)

69 (sixty-nine) is the natural number following 68 and preceding 70.

[edit] In mathematics

Adding up the divisors of 1 through 9 gives 69.

Because 69 has an odd number of 1s in its binary representation, it is sometimes called an "odious number"

Something to note is that 69³² = 6969...

Another thing to note is that 69² (4 761) and 69³ (328 509) uses every digit from 1-9.

69 is equal to 105 octal, while 105 is equal to 69 hexadecimal. This same property can be applied to all numbers from 64 to 69.

Sixty-nine is:

The 69 sex position in which the participants stimulate each others' sex organs with their mouths
The number of convergence (maybe this name comes from above)
69 Année érotique by Serge Gainsbourg
U.S. Route 69, an interstate highway from Minnesota to Texas
The registry of the U.S. Navy's nuclear aircraft carrier USS Dwight D. Eisenhower (CVN-69), named after U.S. President Dwight D. Eisenhower
Vat 69, a brand of whiskey
The number of the French department Rhône
In Bill & Ted's Excellent Adventure, the number past and present Bill and Ted are thinking when questioned by future Bill and Ted to confirm their identity (presumably because of its meaning as a sex position)
69, a novel by Ryu Murakami
The highest numbered channel on the UHF analog television broadcast spectrum, after the spectrum previously assigned to channels 70-83 was reallocated for use by cellular phone services
The number of electoral votes received by George Washington when he became the first President of the United States
Agent number 69, Stripperella, a fictional character
The number of American motorcycle racer Nicky Hayden
The number tattooed on the left cheek of Shūhei Hisagi, a character from Bleach
69 Surfwear, a clothing company
In the movie The Spy Who Shagged Me, 69 is referred as Austin Powers' favourite number.