566571493 has 2 divisors, whose sum is σ = 566571494. Its totient is φ = 566571492.

The previous prime is 566571451. The next prime is 566571539. The reversal of 566571493 is 394175665.

It is an a-pointer prime, because the next prime (566571539) can be obtained adding 566571493 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440076484 + 126495009 = 20978^2 + 11247^2 .

It is a cyclic number.

It is not a de Polignac number, because 566571493 - 2⁹ = 566570981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566571433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283285746 + 283285747.

It is an arithmetic number, because the mean of its divisors is an integer number (283285747).

Almost surely, 2^566571493 is an apocalyptic number.

It is an amenable number.

566571493 is a deficient number, since it is larger than the sum of its proper divisors (1).

566571493 is an equidigital number, since it uses as much as digits as its factorization.

566571493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 566571493 is about 23802.7622976830. The cubic root of 566571493 is about 827.4686962538.

The spelling of 566571493 in words is "five hundred sixty-six million, five hundred seventy-one thousand, four hundred ninety-three".