5566509647 has 2 divisors, whose sum is σ = 5566509648. Its totient is φ = 5566509646.

The previous prime is 5566509643. The next prime is 5566509671. The reversal of 5566509647 is 7469056655.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5566509647 - 2² = 5566509643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5566509643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783254823 + 2783254824.

It is an arithmetic number, because the mean of its divisors is an integer number (2783254824).

Almost surely, 2^5566509647 is an apocalyptic number.

5566509647 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566509647 is an equidigital number, since it uses as much as digits as its factorization.

5566509647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The square root of 5566509647 is about 74609.0453430413. The cubic root of 5566509647 is about 1772.2608969915.

The spelling of 5566509647 in words is "five billion, five hundred sixty-six million, five hundred nine thousand, six hundred forty-seven".