877

877 is a prime number.

877 has a representation as a sum of two squares: 877 = 6² + 29².

877 is the seventh Bell number.

877 is the hypotenuse of a primitive Pythagorean triple: 877² = 348² + 805².

877 is 1555 in base 8 and 611 in base 12.

877 is a telephone area code for toll-free service.

Source: Prime Curios!