565675681 has 2 divisors, whose sum is σ = 565675682. Its totient is φ = 565675680.

The previous prime is 565675661. The next prime is 565675703. The reversal of 565675681 is 186576565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421891600 + 143784081 = 20540^2 + 11991^2 .

It is a cyclic number.

It is not a de Polignac number, because 565675681 - 2⁹ = 565675169 is a prime.

It is a super-2 number, since 2×565675681² = 639977952149627522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (565675661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282837840 + 282837841.

It is an arithmetic number, because the mean of its divisors is an integer number (282837841).

Almost surely, 2^565675681 is an apocalyptic number.

It is an amenable number.

565675681 is a deficient number, since it is larger than the sum of its proper divisors (1).

565675681 is an equidigital number, since it uses as much as digits as its factorization.

565675681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 49.

The square root of 565675681 is about 23783.9374578727. The cubic root of 565675681 is about 827.0323597927.

The spelling of 565675681 in words is "five hundred sixty-five million, six hundred seventy-five thousand, six hundred eighty-one".