6775 has 6 divisors (see below), whose sum is σ = 8432. Its totient is φ = 5400.

The previous prime is 6763. The next prime is 6779. The reversal of 6775 is 5776.

6775 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6775 - 2⁹ = 6263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 271 = 6775 / (6 + 7 + 7 + 5).

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111 + ... + 160.

2⁶⁷⁷⁵ is an apocalyptic number.

6775 is a deficient number, since it is larger than the sum of its proper divisors (1657).

6775 is a wasteful number, since it uses less digits than its factorization.

6775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 276 counting only the distinct ones).

The product of its digits is 1470, while the sum is 25.

The square root of 6775 is about 82.3103881658. The cubic root of 6775 is about 18.9221188741.

Subtracting from 6775 its reverse (5776), we obtain a palindrome (999).

The spelling of 6775 in words is "six thousand, seven hundred seventy-five".