85216717 has 2 divisors, whose sum is σ = 85216718. Its totient is φ = 85216716.

The previous prime is 85216711. The next prime is 85216723. The reversal of 85216717 is 71761258.

It is a balanced prime because it is at equal distance from previous prime (85216711) and next prime (85216723).

It can be written as a sum of positive squares in only one way, i.e., 73513476 + 11703241 = 8574^2 + 3421^2 .

It is a cyclic number.

It is not a de Polignac number, because 85216717 - 2¹¹ = 85214669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85216711) 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, 42608358 + 42608359.

It is an arithmetic number, because the mean of its divisors is an integer number (42608359).

Almost surely, 2^85216717 is an apocalyptic number.

It is an amenable number.

85216717 is a deficient number, since it is larger than the sum of its proper divisors (1).

85216717 is an equidigital number, since it uses as much as digits as its factorization.

85216717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 37.

The square root of 85216717 is about 9231.2901048553. The cubic root of 85216717 is about 440.0563237126.

The spelling of 85216717 in words is "eighty-five million, two hundred sixteen thousand, seven hundred seventeen".