85775773 has 2 divisors, whose sum is σ = 85775774. Its totient is φ = 85775772.

The previous prime is 85775759. The next prime is 85775819. The reversal of 85775773 is 37757758.

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., 75394489 + 10381284 = 8683^2 + 3222^2 .

It is a cyclic number.

It is not a de Polignac number, because 85775773 - 2¹⁷ = 85644701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85775713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42887886 + 42887887.

It is an arithmetic number, because the mean of its divisors is an integer number (42887887).

Almost surely, 2^85775773 is an apocalyptic number.

It is an amenable number.

85775773 is a deficient number, since it is larger than the sum of its proper divisors (1).

85775773 is an equidigital number, since it uses as much as digits as its factorization.

85775773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440600, while the sum is 49.

The square root of 85775773 is about 9261.5210953709. The cubic root of 85775773 is about 441.0165425551.

The spelling of 85775773 in words is "eighty-five million, seven hundred seventy-five thousand, seven hundred seventy-three".