69487

Appears in sequences

• Starts of runs of 3 consecutive Niven numbers in base 2 (A049445).at n=34A330932
• a(n) = Sum_{j=1..n} Sum_{k=1..n} phi(j*k).at n=27A372633
• Starts of runs of 4 consecutive integers that are all terms in A381581.at n=7A381584