85799000689 has 2 divisors, whose sum is σ = 85799000690. Its totient is φ = 85799000688.

The previous prime is 85799000647. The next prime is 85799000719. The reversal of 85799000689 is 98600099758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52230531600 + 33568469089 = 228540^2 + 183217^2 .

It is a cyclic number.

It is not a de Polignac number, because 85799000689 - 2¹⁷ = 85798869617 is a prime.

It is a super-2 number, since 2×85799000689² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85799000489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42899500344 + 42899500345.

It is an arithmetic number, because the mean of its divisors is an integer number (42899500345).

Almost surely, 2^85799000689 is an apocalyptic number.

It is an amenable number.

85799000689 is a deficient number, since it is larger than the sum of its proper divisors (1).

85799000689 is an equidigital number, since it uses as much as digits as its factorization.

85799000689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 85799000689 in words is "eighty-five billion, seven hundred ninety-nine million, six hundred eighty-nine", and thus it is an aban number.