6579779 has 2 divisors, whose sum is σ = 6579780. Its totient is φ = 6579778.

The previous prime is 6579767. The next prime is 6579787. The reversal of 6579779 is 9779756.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6579779 is a prime.

It is not a weakly prime, because it can be changed into another prime (6579179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3289889 + 3289890.

It is an arithmetic number, because the mean of its divisors is an integer number (3289890).

Almost surely, 2^6579779 is an apocalyptic number.

6579779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6579779 is an equidigital number, since it uses as much as digits as its factorization.

6579779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 833490, while the sum is 50.

The square root of 6579779 is about 2565.1079899295. The cubic root of 6579779 is about 187.3859834226.

The spelling of 6579779 in words is "six million, five hundred seventy-nine thousand, seven hundred seventy-nine".