The children of Adonikam, six hundred sixty and six.
Referenced Verses
Ezra 8:13 : 13 And of the sons of Adonikam, [that were] the last; and these are their names: Eliphelet, Jeuel, and Shemaiah; and with them threescore males.
Neh 7:18 : 18 The children of Adonikam, six hundred threescore and seven.