85709011 has 2 divisors, whose sum is σ = 85709012. Its totient is φ = 85709010.

The previous prime is 85708967. The next prime is 85709027. The reversal of 85709011 is 11090758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85709011 - 2¹⁷ = 85577939 is a prime.

It is not a weakly prime, because it can be changed into another prime (85709051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42854505 + 42854506.

It is an arithmetic number, because the mean of its divisors is an integer number (42854506).

Almost surely, 2^85709011 is an apocalyptic number.

85709011 is a deficient number, since it is larger than the sum of its proper divisors (1).

85709011 is an equidigital number, since it uses as much as digits as its factorization.

85709011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 85709011 is about 9257.9161262133. The cubic root of 85709011 is about 440.9020938106.

Adding to 85709011 its reverse (11090758), we get a palindrome (96799769).

The spelling of 85709011 in words is "eighty-five million, seven hundred nine thousand, eleven".