6778756 has 6 divisors (see below), whose sum is σ = 11862830. Its totient is φ = 3389376.

The previous prime is 6778741. The next prime is 6778769. The reversal of 6778756 is 6578776.

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 2452356 = 2080^2 + 1566^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 847341 + ... + 847348.

Almost surely, 2^6778756 is an apocalyptic number.

It is an amenable number.

6778756 is a deficient number, since it is larger than the sum of its proper divisors (5084074).

6778756 is a wasteful number, since it uses less digits than its factorization.

6778756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694693 (or 1694691 counting only the distinct ones).

The product of its digits is 493920, while the sum is 46.

The square root of 6778756 is about 2603.6044246390. The cubic root of 6778756 is about 189.2561497978.

The spelling of 6778756 in words is "six million, seven hundred seventy-eight thousand, seven hundred fifty-six".