85771011 has 8 divisors (see below), whose sum is σ = 115809280. Its totient is φ = 56456712.

The previous prime is 85771003. The next prime is 85771039. The reversal of 85771011 is 11017758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85771011 - 2³ = 85771003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85771011.

It is not an unprimeable number, because it can be changed into a prime (85771051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180715 + ... + 181188.

It is an arithmetic number, because the mean of its divisors is an integer number (14476160).

Almost surely, 2^85771011 is an apocalyptic number.

85771011 is a deficient number, since it is larger than the sum of its proper divisors (30038269).

85771011 is a wasteful number, since it uses less digits than its factorization.

85771011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361985.

The product of its (nonzero) digits is 1960, while the sum is 30.

The square root of 85771011 is about 9261.2640066030. The cubic root of 85771011 is about 441.0083811222.

Adding to 85771011 its reverse (11017758), we get a palindrome (96788769).

The spelling of 85771011 in words is "eighty-five million, seven hundred seventy-one thousand, eleven".