868 defines time.
No, really.
The oldest dated printed book was printed in 868.
868 is the area code for Trinidad and Tobago.
There is a restaurant in Cambridge, Ma called "Miracle of Science Bar & Grill", whose telephone exchange is 868.
When Googling for 868, click on page 5 and you will find a link about antimatter whose summary, URL, and page do not contain the character sequence "868"
DD-868 is a ship also known as USS Brownson, who took part in Operation Highjump, a training mission in Antarctica, which has since become the topic of many UFO conspiracy theorists.
868 Towers Offices and Hotel is a 331 meter that will be built in Haikou, China.
There is a minor planet orbiting the sun named 868 Lova.
ZigBee operates at 868 MHz in Europe.
868 is a number in Lozanić's triangle
Sadaharu Oh, a Japanese baseball player, hit 868 home runs in his career.
There is a town in Mexico called El Control, in the 868 area code. (Not the Trinidad and Tobago one.)
The Northrop Alpha had a useful load of 868 kg.
2-Perf film has a film area that is 0.868" wide.
Is that special enough?
And whoever said 1439 wasn't unique,
check this out.