6778579 has 2 divisors, whose sum is σ = 6778580. Its totient is φ = 6778578.

The previous prime is 6778567. The next prime is 6778589. The reversal of 6778579 is 9758776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6778579 - 2¹⁵ = 6745811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6778559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389289 + 3389290.

It is an arithmetic number, because the mean of its divisors is an integer number (3389290).

Almost surely, 2^6778579 is an apocalyptic number.

6778579 is a deficient number, since it is larger than the sum of its proper divisors (1).

6778579 is an equidigital number, since it uses as much as digits as its factorization.

6778579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 49.

The square root of 6778579 is about 2603.5704330784. The cubic root of 6778579 is about 189.2545025619.

The spelling of 6778579 in words is "six million, seven hundred seventy-eight thousand, five hundred seventy-nine".