85711871 has 8 divisors (see below), whose sum is σ = 98211360. Its totient is φ = 73276128.

The previous prime is 85711817. The next prime is 85711877. The reversal of 85711871 is 17811758.

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

It is a cyclic number.

It is not a de Polignac number, because 85711871 - 2¹⁰ = 85710847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85711877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13016 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (12276420).

Almost surely, 2^85711871 is an apocalyptic number.

85711871 is a deficient number, since it is larger than the sum of its proper divisors (12499489).

85711871 is a wasteful number, since it uses less digits than its factorization.

85711871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31873.

The product of its digits is 15680, while the sum is 38.

The square root of 85711871 is about 9258.0705873308. The cubic root of 85711871 is about 440.9069978689.

The spelling of 85711871 in words is "eighty-five million, seven hundred eleven thousand, eight hundred seventy-one".