564386491 has 2 divisors, whose sum is σ = 564386492. Its totient is φ = 564386490.

The previous prime is 564386467. The next prime is 564386513. The reversal of 564386491 is 194683465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 564386491 - 2¹⁵ = 564353723 is a prime.

It is a super-2 number, since 2×564386491² = 637064222446586162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (564386401) 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, 282193245 + 282193246.

It is an arithmetic number, because the mean of its divisors is an integer number (282193246).

Almost surely, 2^564386491 is an apocalyptic number.

564386491 is a deficient number, since it is larger than the sum of its proper divisors (1).

564386491 is an equidigital number, since it uses as much as digits as its factorization.

564386491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The square root of 564386491 is about 23756.8198839828. The cubic root of 564386491 is about 826.4036056153.

The spelling of 564386491 in words is "five hundred sixty-four million, three hundred eighty-six thousand, four hundred ninety-one".