6767

6767 is a natural number that sits between 6766 and 6768. In decimal notation it is written as 6767. It is an odd composite number.

Prime factorization: 6767 = 67 × 101. Both 67 and 101 are primes, so 6767 is a semiprime. Its positive divisors are 1, 67, 101, and 6767.

Other arithmetic properties: the sum of digits is 6+7+6+7 = 26, so it is not divisible by 3 or 9; it is not divisible by 5. Euler's totient function gives phi(6767) = (67 − 1)(101 − 1) = 66 × 100 = 6600. The binary representation is 1101001101111_2, and in hexadecimal it is 1A6F_16.

For mathematical use, semiprimes like 6767 are studied in number theory and are often encountered in factoring contexts and cryptography as simple illustrative examples (though 6767 itself is not used in modern cryptosystems).

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