This number is a prime.

+ The smallest invertible prime p containing all of the invertible digits that becomes a Sophie Germain prime q (6889901) when turned upside down. Curiously, p and q can be expressed as the sum of two squares, viz., (835^2 + 608^2) and (1901^2+1810^2) respectively. [Bajpai]

+ The smallest invertible prime P containing all the invertible digits {0, 1, 6, 8, 9} that is the greater member of a sexy prime pair: {1066883, 1066889}. [Bajpai]

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