4646

4646 = 2 x 23 x 101.

The digits of 4646 are all semiprimes (A111494 and A107665).

5⁴⁶⁴⁶ - 4646⁵ is a prime (A117705).

4646 and the 4646th prime (44699) contain only the digits 4, 6, and 9 (A107624).

4646 is the number of connected graphs on eight nodes with clique number 4 (A126746).

Source: On-Line Encyclopedia of Integer Sequences