6602701

Appears in sequences

• Numbers c such that there is a Pythagorean triple (a,b,c) such that (A001414(a), A001414(b), A001414(c)) is also a Pythagorean triple.at n=14A337540
• Numbers k for which A053585(sigma(k)) is equal to A053585(k) and that satisfy also Euler's condition for odd perfect numbers (A228058).at n=17A388276