260

260 = 2² x 5 x 13.

260 has two representations as a sum of two squares: 260 = 2² + 16² = 8² + 14².

The sum of the first 260 primes minus the sum of the gaps between them is a prime number.

260 is a 11-gonal (or hendecagonal) number.

260 is the sum of two distinct powers of 2: 260 = 2⁸ + 2².


260 is the number of ways that six non-attacking bishops can be placed on a four-by-four chessboard.

The number of weekdays in a year is 260, 261, or 262.

Source: Prime Curios!