85887191 has 8 divisors (see below), whose sum is σ = 92565984. Its totient is φ = 79218720.

The previous prime is 85887173. The next prime is 85887203. The reversal of 85887191 is 19178858.

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 85887191 - 2²² = 81692887 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 (85887091) 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, 30326 + ... + 33036.

It is an arithmetic number, because the mean of its divisors is an integer number (11570748).

Almost surely, 2^85887191 is an apocalyptic number.

85887191 is a deficient number, since it is larger than the sum of its proper divisors (6678793).

85887191 is a wasteful number, since it uses less digits than its factorization.

85887191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161.

The product of its digits is 161280, while the sum is 47.

The square root of 85887191 is about 9267.5342459578. The cubic root of 85887191 is about 441.2074119939.

The spelling of 85887191 in words is "eighty-five million, eight hundred eighty-seven thousand, one hundred ninety-one".