8585720089 has 2 divisors, whose sum is σ = 8585720090. Its totient is φ = 8585720088.

The previous prime is 8585720063. The next prime is 8585720131. The reversal of 8585720089 is 9800275858.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4888107225 + 3697612864 = 69915^2 + 60808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8585720089 is a prime.

It is not a weakly prime, because it can be changed into another prime (8585727089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4292860044 + 4292860045.

It is an arithmetic number, because the mean of its divisors is an integer number (4292860045).

Almost surely, 2^8585720089 is an apocalyptic number.

It is an amenable number.

8585720089 is a deficient number, since it is larger than the sum of its proper divisors (1).

8585720089 is an equidigital number, since it uses as much as digits as its factorization.

8585720089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 52.

The square root of 8585720089 is about 92659.1608477003. The cubic root of 8585720089 is about 2047.6650066022.

The spelling of 8585720089 in words is "eight billion, five hundred eighty-five million, seven hundred twenty thousand, eighty-nine".