85675217 has 2 divisors, whose sum is σ = 85675218. Its totient is φ = 85675216.

The previous prime is 85675133. The next prime is 85675241. The reversal of 85675217 is 71257658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85673536 + 1681 = 9256^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 85675217 - 2²² = 81480913 is a prime.

It is not a weakly prime, because it can be changed into another prime (85675267) 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, 42837608 + 42837609.

It is an arithmetic number, because the mean of its divisors is an integer number (42837609).

Almost surely, 2^85675217 is an apocalyptic number.

It is an amenable number.

85675217 is a deficient number, since it is larger than the sum of its proper divisors (1).

85675217 is an equidigital number, since it uses as much as digits as its factorization.

85675217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 41.

The square root of 85675217 is about 9256.0908055183. The cubic root of 85675217 is about 440.8441387839.

The spelling of 85675217 in words is "eighty-five million, six hundred seventy-five thousand, two hundred seventeen".