6778767 has 16 divisors (see below), whose sum is σ = 9987840. Its totient is φ = 4067712.

The previous prime is 6778741. The next prime is 6778769. The reversal of 6778767 is 7678776.

It is not a de Polignac number, because 6778767 - 2⁶ = 6778703 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1717 + ... + 4062.

It is an arithmetic number, because the mean of its divisors is an integer number (624240).

Almost surely, 2^6778767 is an apocalyptic number.

6778767 is a deficient number, since it is larger than the sum of its proper divisors (3209073).

6778767 is a wasteful number, since it uses less digits than its factorization.

6778767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822.

The product of its digits is 691488, while the sum is 48.

The square root of 6778767 is about 2603.6065370943. The cubic root of 6778767 is about 189.2562521674.

Subtracting 6778767 from its reverse (7678776), we obtain a palindrome (900009).

The spelling of 6778767 in words is "six million, seven hundred seventy-eight thousand, seven hundred sixty-seven".