67 (number)

Template:Pp-extended Template:Pp-protected Template:Pp-pc Template:Infobox number 67 (sixty-seven) is the natural number following 66 and preceding 68. It is an odd and prime number.

In mathematics

67 is:

• the 19th prime number (the next is 71).
• a Chen prime.<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

• an irregular prime.<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

• a lucky prime.<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

• the sum of five consecutive primes (7 + 11 + 13 + 17 + 19).
• a Heegner number.<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

• a Pillai prime since 18! + 1 is divisible by 67, but 67 is not one more than a multiple of 18.<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

• palindromic in quinary (232₅) and senary (151₆).
• a super-prime. (19 is prime)
• an isolated prime. (65 and 69 are not prime)
• a sexy prime with 61 and 73

Internet culture

{{#invoke:Labelled list hatnote|labelledList|Main article|Main articles|Main page|Main pages}} 6-7 is a meme, typically popularized by Generation Alpha, originally from a rap song called 'Doot Doot.'<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It is also associated with basketball player; LeMelo Ball, who is 6'7 in height.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It is cited as the brain rot phenomenon — poor quality digital media.<ref>Template:Cite news</ref>