וַיִּהְי֗וּ הַמֵּתִים֙ בַּמַּגֵּפָ֔ה אַרְבָּעָ֥ה עָשָׂ֛ר אֶ֖לֶף וּשְׁבַ֣ע מֵא֑וֹת מִלְּבַ֥ד הַמֵּתִ֖ים עַל־דְּבַר־קֹֽרַח׃
Now they that died by the plague were fourteen thousand and seven hundred, besides them that died about the matter of Korah.
Read kabbalistic (mystical) interpretation of Numbers 17:14: and classical mystical sources.