589

589 = 19 x 31.

589 is a centered tetrahedral number.

589 is the sum of three consecutive primes: 589 = 193 + 197 + 199.

589² contains exactly six different digits: 589² = 346921.

589 is the sum of the first 20 semiprimes.

The USS Scorpion (SSN-589) was a nuclear submarine of the U.S. Navy.

Source: What's Special About This Number?