64560571 has 2 divisors, whose sum is σ = 64560572. Its totient is φ = 64560570.

The previous prime is 64560539. The next prime is 64560589. The reversal of 64560571 is 17506546.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64560571 - 2⁵ = 64560539 is a prime.

It is equal to p_3816259 and since 64560571 and 3816259 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64560521) 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, 32280285 + 32280286.

It is an arithmetic number, because the mean of its divisors is an integer number (32280286).

Almost surely, 2^64560571 is an apocalyptic number.

64560571 is a deficient number, since it is larger than the sum of its proper divisors (1).

64560571 is an equidigital number, since it uses as much as digits as its factorization.

64560571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 64560571 is about 8034.9593029461. The cubic root of 64560571 is about 401.1644630251.

It can be divided in two parts, 645 and 60571, that added together give a palindrome (61216).

The spelling of 64560571 in words is "sixty-four million, five hundred sixty thousand, five hundred seventy-one".