6780679 has 2 divisors, whose sum is σ = 6780680. Its totient is φ = 6780678.

The previous prime is 6780629. The next prime is 6780707. The reversal of 6780679 is 9760876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6780679 - 2⁷ = 6780551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6780619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390339 + 3390340.

It is an arithmetic number, because the mean of its divisors is an integer number (3390340).

Almost surely, 2^6780679 is an apocalyptic number.

6780679 is a deficient number, since it is larger than the sum of its proper divisors (1).

6780679 is an equidigital number, since it uses as much as digits as its factorization.

6780679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 6780679 is about 2603.9736941836. The cubic root of 6780679 is about 189.2740441906.

The spelling of 6780679 in words is "six million, seven hundred eighty thousand, six hundred seventy-nine".