6566479 has 2 divisors, whose sum is σ = 6566480. Its totient is φ = 6566478.

The previous prime is 6566453. The next prime is 6566489. The reversal of 6566479 is 9746656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6566479 - 2⁹ = 6565967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6566489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283239 + 3283240.

It is an arithmetic number, because the mean of its divisors is an integer number (3283240).

Almost surely, 2^6566479 is an apocalyptic number.

6566479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6566479 is an equidigital number, since it uses as much as digits as its factorization.

6566479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 6566479 is about 2562.5141950826. The cubic root of 6566479 is about 187.2596410491.

It can be divided in two parts, 656647 and 9, that added together give a palindrome (656656).

The spelling of 6566479 in words is "six million, five hundred sixty-six thousand, four hundred seventy-nine".