Verses with the word adonikam in the Old Testament (3 verses):

Ezra 2:13
The children of Adonikam, six hundred sixty and six.

Ezra 8:13
And of the last sons of Adonikam, whose names are these, Eliphelet, Jeiel, and Shemaiah, and with them threescore males.

Nehemiah 7:18
The children of Adonikam, six hundred threescore and seven.