65560889 has 2 divisors, whose sum is σ = 65560890. Its totient is φ = 65560888.

The previous prime is 65560867. The next prime is 65560897. The reversal of 65560889 is 98806556.

It is a happy number.

65560889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63361600 + 2199289 = 7960^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 65560889 - 2²⁰ = 64512313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65560819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32780444 + 32780445.

It is an arithmetic number, because the mean of its divisors is an integer number (32780445).

Almost surely, 2^65560889 is an apocalyptic number.

It is an amenable number.

65560889 is a deficient number, since it is larger than the sum of its proper divisors (1).

65560889 is an equidigital number, since it uses as much as digits as its factorization.

65560889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 65560889 is about 8096.9678892781. The cubic root of 65560889 is about 403.2257682029.

The spelling of 65560889 in words is "sixty-five million, five hundred sixty thousand, eight hundred eighty-nine".