85787 has 4 divisors (see below), whose sum is σ = 92400. Its totient is φ = 79176.

The previous prime is 85781. The next prime is 85793. The reversal of 85787 is 78758.

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

It is an interprime number because it is at equal distance from previous prime (85781) and next prime (85793).

It is a cyclic number.

It is not a de Polignac number, because 85787 - 2⁸ = 85531 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (85781) 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, 3287 + ... + 3312.

It is an arithmetic number, because the mean of its divisors is an integer number (23100).

2⁸⁵⁷⁸⁷ is an apocalyptic number.

85787 is a deficient number, since it is larger than the sum of its proper divisors (6613).

85787 is a wasteful number, since it uses less digits than its factorization.

85787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612.

The product of its digits is 15680, while the sum is 35.

The square root of 85787 is about 292.8941788428. The cubic root of 85787 is about 44.1035782940.

Subtracting from 85787 its product of digits (15680), we obtain a palindrome (70107).

The spelling of 85787 in words is "eighty-five thousand, seven hundred eighty-seven".