564805949 has 2 divisors, whose sum is σ = 564805950. Its totient is φ = 564805948.

The previous prime is 564805897. The next prime is 564805961. The reversal of 564805949 is 949508465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557809924 + 6996025 = 23618^2 + 2645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564805949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 564805897 and 564805906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564805249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282402974 + 282402975.

It is an arithmetic number, because the mean of its divisors is an integer number (282402975).

Almost surely, 2^564805949 is an apocalyptic number.

It is an amenable number.

564805949 is a deficient number, since it is larger than the sum of its proper divisors (1).

564805949 is an equidigital number, since it uses as much as digits as its factorization.

564805949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 564805949 is about 23765.6464040009. The cubic root of 564805949 is about 826.6082855457.

The spelling of 564805949 in words is "five hundred sixty-four million, eight hundred five thousand, nine hundred forty-nine".