6776891 has 8 divisors (see below), whose sum is σ = 7411824. Its totient is φ = 6145120.

The previous prime is 6776873. The next prime is 6776893. The reversal of 6776891 is 1986776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6776891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6776893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8105 + ... + 8901.

It is an arithmetic number, because the mean of its divisors is an integer number (926478).

Almost surely, 2^6776891 is an apocalyptic number.

6776891 is a deficient number, since it is larger than the sum of its proper divisors (634933).

6776891 is a wasteful number, since it uses less digits than its factorization.

6776891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its digits is 127008, while the sum is 44.

The square root of 6776891 is about 2603.2462426747. The cubic root of 6776891 is about 189.2387918886.

It can be divided in two parts, 6776 and 891, that added together give a palindrome (7667).

The spelling of 6776891 in words is "six million, seven hundred seventy-six thousand, eight hundred ninety-one".