5566668869 has 2 divisors, whose sum is σ = 5566668870. Its totient is φ = 5566668868.

The previous prime is 5566668859. The next prime is 5566668889. The reversal of 5566668869 is 9688666655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2814302500 + 2752366369 = 53050^2 + 52463^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566668869 - 2³² = 1271701573 is a prime.

It is a super-2 number, since 2×5566668869² = 61975604594187478322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5566668839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783334434 + 2783334435.

It is an arithmetic number, because the mean of its divisors is an integer number (2783334435).

Almost surely, 2^5566668869 is an apocalyptic number.

It is an amenable number.

5566668869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566668869 is an equidigital number, since it uses as much as digits as its factorization.

5566668869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111974400, while the sum is 65.

The square root of 5566668869 is about 74610.1123776127. The cubic root of 5566668869 is about 1772.2777944881.

The spelling of 5566668869 in words is "five billion, five hundred sixty-six million, six hundred sixty-eight thousand, eight hundred sixty-nine".