85619243 has 2 divisors, whose sum is σ = 85619244. Its totient is φ = 85619242.

The previous prime is 85619227. The next prime is 85619249. The reversal of 85619243 is 34291658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85619243 - 2⁴ = 85619227 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85619197 and 85619206.

It is not a weakly prime, because it can be changed into another prime (85619249) 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, 42809621 + 42809622.

It is an arithmetic number, because the mean of its divisors is an integer number (42809622).

Almost surely, 2^85619243 is an apocalyptic number.

85619243 is a deficient number, since it is larger than the sum of its proper divisors (1).

85619243 is an equidigital number, since it uses as much as digits as its factorization.

85619243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 85619243 is about 9253.0666808361. The cubic root of 85619243 is about 440.7481126267.

The spelling of 85619243 in words is "eighty-five million, six hundred nineteen thousand, two hundred forty-three".