Miachel is of Hebrew origin and means 'who is like God'. It's a variant spelling of Michael, which has been widely popular throughout history due to its biblical association with one of the seven archangels. Miachel gained notable usage in English-speaking countries from the 19th century onwards. The name's popularity peaked in the United States during the late 20th century.
"Miachel saw its peak popularity with 14 births each in 1962 and 1963, but it has been quite uncommon since the late 1960s."