85686241 has 2 divisors, whose sum is σ = 85686242. Its totient is φ = 85686240.

The previous prime is 85686221. The next prime is 85686253. The reversal of 85686241 is 14268658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83448225 + 2238016 = 9135^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 85686241 - 2¹⁹ = 85161953 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85686194 and 85686203.

It is not a weakly prime, because it can be changed into another prime (85686221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42843120 + 42843121.

It is an arithmetic number, because the mean of its divisors is an integer number (42843121).

Almost surely, 2^85686241 is an apocalyptic number.

It is an amenable number.

85686241 is a deficient number, since it is larger than the sum of its proper divisors (1).

85686241 is an equidigital number, since it uses as much as digits as its factorization.

85686241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 40.

The square root of 85686241 is about 9256.6862861393. The cubic root of 85686241 is about 440.8630460694.

The spelling of 85686241 in words is "eighty-five million, six hundred eighty-six thousand, two hundred forty-one".