7987

7987 is the natural number that comes after 7986 and before 7988. It is an odd composite number. Its prime factorization is 7^2 × 163, so it is divisible by 7 and by 49. The positive divisors are 1, 7, 49, 163, 1141, and 7987.

In decimal notation it is 7987; the sum of its digits is 31, which indicates it is not divisible by 3 or 9. In binary it equals 1111100110011_2, and in hexadecimal it is 0x1ECF. In octal it is 17463_8.

As a mathematical object, 7987 is used as an example of a composite number with a small prime factorization: 7^2 × 163. The number of divisors is (2+1)(1+1) = 6.

In cultural or historical contexts, 7987 is primarily encountered as a numeric label rather than a notable year or event, and it is occasionally used to illustrate counting or cataloging in lists of integers.

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