85674539 has 2 divisors, whose sum is σ = 85674540. Its totient is φ = 85674538.

The previous prime is 85674529. The next prime is 85674541. The reversal of 85674539 is 93547658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85674539 - 2⁸ = 85674283 is a prime.

Together with 85674541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85674493 and 85674502.

It is not a weakly prime, because it can be changed into another prime (85674529) 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, 42837269 + 42837270.

It is an arithmetic number, because the mean of its divisors is an integer number (42837270).

Almost surely, 2^85674539 is an apocalyptic number.

85674539 is a deficient number, since it is larger than the sum of its proper divisors (1).

85674539 is an equidigital number, since it uses as much as digits as its factorization.

85674539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The square root of 85674539 is about 9256.0541809132. The cubic root of 85674539 is about 440.8429758918.

The spelling of 85674539 in words is "eighty-five million, six hundred seventy-four thousand, five hundred thirty-nine".