898

898 = 2 x 449.

898 has a representation as a sum of two squares: 898 = 13² + 27².

898 is a member of the Fibonacci-type sequence starting with 2 and 5.

898 is 747 in base 11.

ISO 898 is an international standard that defines mechanical and physical properties for metric fasteners.

Source: What's Special About This Number?