As character names:

U+17D0 KHMER SIGN SAMYOK SANNYA character (័)

As raw characters:

័

As a string of HTML entities:

័

Decoder output:

Byte number 1 is decimal 225, hex 0xE1, octal \341, binary 11100001
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 144, hex 0x90, octal \220, binary 10010000
This is continuation byte 2, expecting 0 more.

U+17D0	KHMER SIGN SAMYOK SANNYA
	* denotes deviation from the general rules of pronunciation, mostly used in loan words from Pali/Sanskrit, French, and so on