85619227 has 2 divisors, whose sum is σ = 85619228. Its totient is φ = 85619226.

The previous prime is 85619197. The next prime is 85619243. The reversal of 85619227 is 72291658.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85619227 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85619227.

It is not a weakly prime, because it can be changed into another prime (85619927) 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, 42809613 + 42809614.

It is an arithmetic number, because the mean of its divisors is an integer number (42809614).

Almost surely, 2^85619227 is an apocalyptic number.

85619227 is a deficient number, since it is larger than the sum of its proper divisors (1).

85619227 is an equidigital number, since it uses as much as digits as its factorization.

85619227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 85619227 is about 9253.0658162579. The cubic root of 85619227 is about 440.7480851719.

The spelling of 85619227 in words is "eighty-five million, six hundred nineteen thousand, two hundred twenty-seven".