85679171 has 2 divisors, whose sum is σ = 85679172. Its totient is φ = 85679170.

The previous prime is 85679159. The next prime is 85679203. The reversal of 85679171 is 17197658.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85679171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85679141) 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, 42839585 + 42839586.

It is an arithmetic number, because the mean of its divisors is an integer number (42839586).

Almost surely, 2^85679171 is an apocalyptic number.

85679171 is a deficient number, since it is larger than the sum of its proper divisors (1).

85679171 is an equidigital number, since it uses as much as digits as its factorization.

85679171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 44.

The square root of 85679171 is about 9256.3043921427. The cubic root of 85679171 is about 440.8509204841.

The spelling of 85679171 in words is "eighty-five million, six hundred seventy-nine thousand, one hundred seventy-one".