6 Gorillion Lies

The 6 million number is Kabbalistic, as admitted by the J-wiSh Telegraph Agency in their article "The Joy of Six" written by Rabbi Zev Brenner on 16 May 2017:
"The Jubilee year returns J-w$ to their land.
"You shall return (tashuvu), every man to his possession, every man to his family" [Leviticus 25:10]. The Zohar notes that
"tashuvu" is written defectively, missing the letter vav, hinting at our return and the reclaiming of sovereignty over the Land of ISrael.
The Gematria (numerical value) of tashuvu is
708. Rabbi Benjamin Blech writes that tashuvu could also be understood as a year,
(5)708, or 1948 in the secular calendar, the year marking ISrael's independence, "when we returned to the land of our forefathers." Rabbi Blech notes that the missing vav (corresponding to the number six) perhaps alludes to the missing Six Million.
The Maharal writes that vav represents physical completion, as the world was completed on the Sixth Day of Creation. The Torah was given on the sixth day of Sivan to 600,000, the ISraelite census corresponding to the 600,000 letters of the Torah. In 1947, on the eve of Independence, the J-wiSh population of the Yishuv (pre-state ISrael) passed 600,000.
Vav means hook, joining words or items, and is also known as the "vav hachibur," the connector, and no Hebrew letter better symbolizes connection and togetherness.
Sometimes that vav is missing."