487

487 is the natural number that comes after 486 and before 488. It is a prime number, meaning it has no positive divisors other than 1 and itself. As an odd integer, 487 is not divisible by 2, 3, or 5; indeed, no integers other than 1 and 487 divide it. Because it is prime, its only factorization is 1 × 487. In modular arithmetic, 487 is congruent to 3 modulo 4.

In different numeral systems, 487 is represented as 111100111 in binary and as 1E7 in hexadecimal (commonly written as 0x1E7). In Roman numerals, 487 is CDLXXXVII.

As a calendar year, 487 CE falls in the late antique period. This was a time of broader political and cultural transitions in parts of Europe and the Mediterranean, preceding the formation of many early medieval polities. The designation 487 is used in historical chronology to situate events and developments within the 5th century.