7

CardinalsevenOrdinal7th
(seventh)Numeral systemseptenaryFactorizationprimePrime4thDivisors1, 7Greek numeralΖ´Roman numeralVII, viiGreekprefix/Latinprefix/Binary111₂Ternary21₃Senary11₆Octal7₈Duodecimal7₁₂Hexadecimal7₁₆Greek numeralZ, ζAmharic፯Arabic, Kurdish, Persian٧Sindhi, Urdu۷Bengali৭Chinese numeral七, 柒Devanāgarī७Santali᱗Telugu౭Tamil௭HebrewזKhmer៧Thai๗Kannada೭Malayalam൭ArmenianԷBabylonian numeral𒐛Egyptian hieroglyph𓐀Morse code_ _...

7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube.

As an early prime number in the series of positive integers, the number seven has symbolic associations in religion, mythology, superstition and philosophy. The seven classical planets resulted in seven being the number of days in a week. 7 is often considered lucky in Western culture and is often seen as highly symbolic.