85871085 has 16 divisors (see below), whose sum is σ = 141826560. Its totient is φ = 44320320.

The previous prime is 85871083. The next prime is 85871099. The reversal of 85871085 is 58017858.

It is not a de Polignac number, because 85871085 - 2¹ = 85871083 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85871081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91870 + ... + 92799.

It is an arithmetic number, because the mean of its divisors is an integer number (8864160).

Almost surely, 2^85871085 is an apocalyptic number.

It is an amenable number.

85871085 is a deficient number, since it is larger than the sum of its proper divisors (55955475).

85871085 is a wasteful number, since it uses less digits than its factorization.

85871085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184708.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 85871085 is about 9266.6652577937. The cubic root of 85871085 is about 441.1798311221.

The spelling of 85871085 in words is "eighty-five million, eight hundred seventy-one thousand, eighty-five".