85730187 has 4 divisors (see below), whose sum is σ = 114306920. Its totient is φ = 57153456.

The previous prime is 85730149. The next prime is 85730189. The reversal of 85730187 is 78103758.

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

It is not a de Polignac number, because 85730187 - 2⁶ = 85730123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85730189) 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, 14288362 + ... + 14288367.

It is an arithmetic number, because the mean of its divisors is an integer number (28576730).

Almost surely, 2^85730187 is an apocalyptic number.

85730187 is a deficient number, since it is larger than the sum of its proper divisors (28576733).

85730187 is a wasteful number, since it uses less digits than its factorization.

85730187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28576732.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 85730187 is about 9259.0597254797. The cubic root of 85730187 is about 440.9384018324.

The spelling of 85730187 in words is "eighty-five million, seven hundred thirty thousand, one hundred eighty-seven".