5566302661 has 2 divisors, whose sum is σ = 5566302662. Its totient is φ = 5566302660.

The previous prime is 5566302647. The next prime is 5566302671. The reversal of 5566302661 is 1662036655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5383890625 + 182412036 = 73375^2 + 13506^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566302661 - 2⁵ = 5566302629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5566302671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783151330 + 2783151331.

It is an arithmetic number, because the mean of its divisors is an integer number (2783151331).

Almost surely, 2^5566302661 is an apocalyptic number.

It is an amenable number.

5566302661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566302661 is an equidigital number, since it uses as much as digits as its factorization.

5566302661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 5566302661 is about 74607.6581927083. The cubic root of 5566302661 is about 1772.2389300401.

The spelling of 5566302661 in words is "five billion, five hundred sixty-six million, three hundred two thousand, six hundred sixty-one".