6

Glyph origin
A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ). See for more.

Symbol

 * 1) The cardinal number six.
 * 2) A digit in the decimal system of numbering, as well as octal, and hexadecimal.
 * 3)  an indicator that a triad is in first inversion.
 * 4)  the pitch of a tone that is more extreme than 5; it will be higher or lower depending on local convention.
 * 5)  tone number 6, typically identified with light departing yang qu (陽去).

Alternative forms
The following are equivalent forms as digits:

The following are only equivalent as representations of the cardinal number:

Noun

 * 1) MI6; the agency or a particular agent.

Verb

 * 1)   (=, second-person singular)