6777656 has 16 divisors (see below), whose sum is σ = 12781800. Its totient is φ = 3369184.

The previous prime is 6777637. The next prime is 6777691. The reversal of 6777656 is 6567776.

It is a happy number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 935 + ... + 3798.

Almost surely, 2^6777656 is an apocalyptic number.

It is an amenable number.

6777656 is a deficient number, since it is larger than the sum of its proper divisors (6004144).

6777656 is a wasteful number, since it uses less digits than its factorization.

6777656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4918 (or 4914 counting only the distinct ones).

The product of its digits is 370440, while the sum is 44.

The square root of 6777656 is about 2603.3931704604. The cubic root of 6777656 is about 189.2459122741.

The spelling of 6777656 in words is "six million, seven hundred seventy-seven thousand, six hundred fifty-six".