564640213 has 2 divisors, whose sum is σ = 564640214. Its totient is φ = 564640212.

The previous prime is 564640183. The next prime is 564640247. The reversal of 564640213 is 312046465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564632644 + 7569 = 23762^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 564640213 - 2¹³ = 564632021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564640253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282320106 + 282320107.

It is an arithmetic number, because the mean of its divisors is an integer number (282320107).

Almost surely, 2^564640213 is an apocalyptic number.

It is an amenable number.

564640213 is a deficient number, since it is larger than the sum of its proper divisors (1).

564640213 is an equidigital number, since it uses as much as digits as its factorization.

564640213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 564640213 is about 23762.1592663630. The cubic root of 564640213 is about 826.5274246450.

Adding to 564640213 its reverse (312046465), we get a palindrome (876686678).

The spelling of 564640213 in words is "five hundred sixty-four million, six hundred forty thousand, two hundred thirteen".