6778544 has 20 divisors (see below), whose sum is σ = 13176240. Its totient is φ = 3378240.

The previous prime is 6778543. The next prime is 6778559. The reversal of 6778544 is 4458776.

It is not an unprimeable number, because it can be changed into a prime (6778543) 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, 6917 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (658812).

Almost surely, 2^6778544 is an apocalyptic number.

It is an amenable number.

6778544 is a deficient number, since it is larger than the sum of its proper divisors (6397696).

6778544 is a wasteful number, since it uses less digits than its factorization.

6778544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 6778544 is about 2603.5637115308. The cubic root of 6778544 is about 189.2541768339.

The spelling of 6778544 in words is "six million, seven hundred seventy-eight thousand, five hundred forty-four".