827

827 is a prime number.

827 and 829 form a twin prime pair.

827 is the smallest prime formed from the concatenation of two consecutive cubes.

827 is the sum of seven consecutive primes: 827 = 103 + 107 + 109 + 113 + 127 + 131 + 137.

There are 827 Ulam numbers below 10,000.

827 is the number of asymmetric trees with 11 vertices.

827 is a divisor of 20¹⁴ - 1.

The unabridged Running Press edition of Gray's Anatomy contains 827 illustrations.

Source: Prime Curios!