6566949479 has 2 divisors, whose sum is σ = 6566949480. Its totient is φ = 6566949478.

The previous prime is 6566949469. The next prime is 6566949527. The reversal of 6566949479 is 9749496656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6566949479 - 2¹⁶ = 6566883943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6566949409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283474739 + 3283474740.

It is an arithmetic number, because the mean of its divisors is an integer number (3283474740).

Almost surely, 2^6566949479 is an apocalyptic number.

6566949479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6566949479 is an equidigital number, since it uses as much as digits as its factorization.

6566949479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88179840, while the sum is 65.

The square root of 6566949479 is about 81036.7168572370. The cubic root of 6566949479 is about 1872.6411323907.

The spelling of 6566949479 in words is "six billion, five hundred sixty-six million, nine hundred forty-nine thousand, four hundred seventy-nine".