This character is a Letter Number and is mainly used in the Bamum script. The codepoint has the numeric value 3.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+A6E8 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Bamum scripts are an evolutionary series of six scripts created for the Bamum language by Ibrahim Njoya, King of Bamum (now western Cameroon). They are notable for evolving from a pictographic system to a semi-syllabary in the space of fourteen years, from 1896 to 1910. Bamum type was cast in 1918, but the script fell into disuse around 1931. A project began around 2007 to revive the Bamum script.
The Bamum script is also used to write the Shümom language, also invented by Njoya.
Representations
System
Representation (click value to copy)
Nº
42728
UTF-8
EA 9B A8
UTF-16
A6 E8
UTF-32
00 00 A6 E8
URL-Quoted
%EA%9B%A8
HTML hex reference
ꛨ
Wrong windows-1252 Mojibake
ꛨ
Encoding: GB18030 (hex bytes)
82 36 CB 31
RFC 5137
\u'A6E8'
Bash and Zsh inside echo -e
\uA6E8
C and C++
\uA6E8
C#
\uA6E8
CSS
\00A6E8
Excel
=UNICHAR(42728)
Go
\uA6E8
JavaScript
\uA6E8
Modern JavaScript since ES6
\u{a6e8}
JSON
\uA6E8
Java
\uA6E8
Lua
\u{A6E8}
Matlab
char(42728)
Perl
"\x{A6E8}"
PHP
\u{a6e8}
PostgreSQL
U&'\A6E8'
PowerShell
`u{A6E8}
Python
\uA6E8
Ruby
\u{a6e8}
Rust
\u{a6e8}
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