6558479 has 2 divisors, whose sum is σ = 6558480. Its totient is φ = 6558478.

The previous prime is 6558469. The next prime is 6558491. The reversal of 6558479 is 9748556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6558479 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6558449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3279239 + 3279240.

It is an arithmetic number, because the mean of its divisors is an integer number (3279240).

Almost surely, 2^6558479 is an apocalyptic number.

6558479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6558479 is an equidigital number, since it uses as much as digits as its factorization.

6558479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 6558479 is about 2560.9527523951. The cubic root of 6558479 is about 187.1835634478.

The spelling of 6558479 in words is "six million, five hundred fifty-eight thousand, four hundred seventy-nine".