564805897 has 2 divisors, whose sum is σ = 564805898. Its totient is φ = 564805896.

The previous prime is 564805883. The next prime is 564805949. The reversal of 564805897 is 798508465.

It is an a-pointer prime, because the next prime (564805949) can be obtained adding 564805897 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303142921 + 261662976 = 17411^2 + 16176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564805897 is a prime.

It is not a weakly prime, because it can be changed into another prime (564805847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282402948 + 282402949.

It is an arithmetic number, because the mean of its divisors is an integer number (282402949).

Almost surely, 2^564805897 is an apocalyptic number.

It is an amenable number.

564805897 is a deficient number, since it is larger than the sum of its proper divisors (1).

564805897 is an equidigital number, since it uses as much as digits as its factorization.

564805897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The square root of 564805897 is about 23765.6453099847. The cubic root of 564805897 is about 826.6082601779.

The spelling of 564805897 in words is "five hundred sixty-four million, eight hundred five thousand, eight hundred ninety-seven".