897 = 3 x 13 x 23. It is the only sphenic number with prime factors of the form p(p + 10)(p + 20).
897 is divisible by the sum of its prime factors (A046346).
897 is a Cullen number; it has the form n x 2n + 1, for n = 7 (A002064).
897 is the sum of the first 34 nonprimes (A051349).
The sum of the digits of 897 is equal to 8 times the number of digits (A061425).
897 is the sum of three nonzero fourth powers (A003337).
897 divides 474 - 1.
Source: Prime Curios!