6779779 has 4 divisors (see below), whose sum is σ = 7074576. Its totient is φ = 6484984.

The previous prime is 6779777. The next prime is 6779783. The reversal of 6779779 is 9779776.

6779779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6779779 - 2¹ = 6779777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6779771) by changing a digit.

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, 147364 + ... + 147409.

It is an arithmetic number, because the mean of its divisors is an integer number (1768644).

Almost surely, 2^6779779 is an apocalyptic number.

6779779 is a deficient number, since it is larger than the sum of its proper divisors (294797).

6779779 is a wasteful number, since it uses less digits than its factorization.

6779779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294796.

The product of its digits is 1166886, while the sum is 52.

The square root of 6779779 is about 2603.8008756431. The cubic root of 6779779 is about 189.2656697010.

It can be divided in two parts, 67797 and 79, that added together give a palindrome (67876).

The spelling of 6779779 in words is "six million, seven hundred seventy-nine thousand, seven hundred seventy-nine".