85710187 has 4 divisors (see below), whose sum is σ = 87533856. Its totient is φ = 83886520.

The previous prime is 85710179. The next prime is 85710193. The reversal of 85710187 is 78101758.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85710187 - 2³ = 85710179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85710587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911764 + ... + 911857.

It is an arithmetic number, because the mean of its divisors is an integer number (21883464).

Almost surely, 2^85710187 is an apocalyptic number.

85710187 is a deficient number, since it is larger than the sum of its proper divisors (1823669).

85710187 is a wasteful number, since it uses less digits than its factorization.

85710187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823668.

The product of its (nonzero) digits is 15680, while the sum is 37.

The square root of 85710187 is about 9257.9796392085. The cubic root of 85710187 is about 440.9041103178.

The spelling of 85710187 in words is "eighty-five million, seven hundred ten thousand, one hundred eighty-seven".