6778766 has 8 divisors (see below), whose sum is σ = 10194240. Its totient is φ = 3380688.

The previous prime is 6778741. The next prime is 6778769. The reversal of 6778766 is 6678776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×6778766⁴ (a number of 28 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6778766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (1274280).

Almost surely, 2^6778766 is an apocalyptic number.

6778766 is a deficient number, since it is larger than the sum of its proper divisors (3415474).

6778766 is a wasteful number, since it uses less digits than its factorization.

6778766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698.

The product of its digits is 592704, while the sum is 47.

The square root of 6778766 is about 2603.6063450530. The cubic root of 6778766 is about 189.2562428611.

The spelling of 6778766 in words is "six million, seven hundred seventy-eight thousand, seven hundred sixty-six".