85704211 has 2 divisors, whose sum is σ = 85704212. Its totient is φ = 85704210.

The previous prime is 85704209. The next prime is 85704217. The reversal of 85704211 is 11240758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85704211 - 2¹ = 85704209 is a prime.

Together with 85704209, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 85704211.

It is not a weakly prime, because it can be changed into another prime (85704217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42852105 + 42852106.

It is an arithmetic number, because the mean of its divisors is an integer number (42852106).

Almost surely, 2^85704211 is an apocalyptic number.

85704211 is a deficient number, since it is larger than the sum of its proper divisors (1).

85704211 is an equidigital number, since it uses as much as digits as its factorization.

85704211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 85704211 is about 9257.6568849790. The cubic root of 85704211 is about 440.8938629781.

Adding to 85704211 its reverse (11240758), we get a palindrome (96944969).

The spelling of 85704211 in words is "eighty-five million, seven hundred four thousand, two hundred eleven".