5666245657 has 2 divisors, whose sum is σ = 5666245658. Its totient is φ = 5666245656.

The previous prime is 5666245643. The next prime is 5666245679. The reversal of 5666245657 is 7565426665.

5666245657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4658881536 + 1007364121 = 68256^2 + 31739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5666245657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5666245687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833122828 + 2833122829.

It is an arithmetic number, because the mean of its divisors is an integer number (2833122829).

Almost surely, 2^5666245657 is an apocalyptic number.

It is an amenable number.

5666245657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666245657 is an equidigital number, since it uses as much as digits as its factorization.

5666245657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072000, while the sum is 52.

The square root of 5666245657 is about 75274.4688257579. The cubic root of 5666245657 is about 1782.7829271176.

The spelling of 5666245657 in words is "five billion, six hundred sixty-six million, two hundred forty-five thousand, six hundred fifty-seven".