6786977 has 4 divisors (see below), whose sum is σ = 6793860. Its totient is φ = 6780096.

The previous prime is 6786943. The next prime is 6787019. The reversal of 6786977 is 7796876.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 1515361 = 2296^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 6786977 - 2⁸ = 6786721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6786917) 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 3 ways as a sum of consecutive naturals, for example, 1652 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (1698465).

Almost surely, 2^6786977 is an apocalyptic number.

It is an amenable number.

6786977 is a deficient number, since it is larger than the sum of its proper divisors (6883).

6786977 is a wasteful number, since it uses less digits than its factorization.

6786977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882.

The product of its digits is 889056, while the sum is 50.

The square root of 6786977 is about 2605.1827191197. The cubic root of 6786977 is about 189.3326262813.

The spelling of 6786977 in words is "six million, seven hundred eighty-six thousand, nine hundred seventy-seven".