6776656 has 10 divisors (see below), whose sum is σ = 13129802. Its totient is φ = 3388320.

The previous prime is 6776641. The next prime is 6776677. The reversal of 6776656 is 6566776.

It can be written as a sum of positive squares in only one way, i.e., 4343056 + 2433600 = 2084^2 + 1560^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211755 + ... + 211786.

Almost surely, 2^6776656 is an apocalyptic number.

It is an amenable number.

6776656 is a deficient number, since it is larger than the sum of its proper divisors (6353146).

6776656 is a wasteful number, since it uses less digits than its factorization.

6776656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423549 (or 423543 counting only the distinct ones).

The product of its digits is 317520, while the sum is 43.

The square root of 6776656 is about 2603.2011063304. The cubic root of 6776656 is about 189.2366044730.

The spelling of 6776656 in words is "six million, seven hundred seventy-six thousand, six hundred fifty-six".