564491671 has 2 divisors, whose sum is σ = 564491672. Its totient is φ = 564491670.

The previous prime is 564491651. The next prime is 564491687. The reversal of 564491671 is 176194465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 564491671 - 2¹⁵ = 564458903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564491651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282245835 + 282245836.

It is an arithmetic number, because the mean of its divisors is an integer number (282245836).

Almost surely, 2^564491671 is an apocalyptic number.

564491671 is a deficient number, since it is larger than the sum of its proper divisors (1).

564491671 is an equidigital number, since it uses as much as digits as its factorization.

564491671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 564491671 is about 23759.0334609807. The cubic root of 564491671 is about 826.4549390742.

The spelling of 564491671 in words is "five hundred sixty-four million, four hundred ninety-one thousand, six hundred seventy-one".