85690193 has 2 divisors, whose sum is σ = 85690194. Its totient is φ = 85690192.

The previous prime is 85690181. The next prime is 85690207. The reversal of 85690193 is 39109658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85507009 + 183184 = 9247^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 85690193 - 2¹⁶ = 85624657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85690193.

It is not a weakly prime, because it can be changed into another prime (85690103) 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, 42845096 + 42845097.

It is an arithmetic number, because the mean of its divisors is an integer number (42845097).

Almost surely, 2^85690193 is an apocalyptic number.

It is an amenable number.

85690193 is a deficient number, since it is larger than the sum of its proper divisors (1).

85690193 is an equidigital number, since it uses as much as digits as its factorization.

85690193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 85690193 is about 9256.8997509966. The cubic root of 85690193 is about 440.8698237580.

The spelling of 85690193 in words is "eighty-five million, six hundred ninety thousand, one hundred ninety-three".