613927

Appears in sequences

• Brilliant numbers (A078972) whose digit reversal is a square.at n=23A115668
• Brilliant numbers (A078972) whose digit reversal is a powerful(1) number (A001694).at n=31A115675
• Largest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.at n=28A130181
• Quasi-Carmichael numbers to exactly four bases.at n=24A257754
• a(n) = (n^2 - n + 1)*(n^2 + n - 1).at n=27A257925