566747081 has 2 divisors, whose sum is σ = 566747082. Its totient is φ = 566747080.

The previous prime is 566747047. The next prime is 566747099. The reversal of 566747081 is 180747665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493062025 + 73685056 = 22205^2 + 8584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566747081 is a prime.

It is a super-2 number, since 2×566747081² = 642404507644041122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (566747021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283373540 + 283373541.

It is an arithmetic number, because the mean of its divisors is an integer number (283373541).

Almost surely, 2^566747081 is an apocalyptic number.

It is an amenable number.

566747081 is a deficient number, since it is larger than the sum of its proper divisors (1).

566747081 is an equidigital number, since it uses as much as digits as its factorization.

566747081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 566747081 is about 23806.4504074001. The cubic root of 566747081 is about 827.5541685895.

The spelling of 566747081 in words is "five hundred sixty-six million, seven hundred forty-seven thousand, eighty-one".