85783 has 4 divisors (see below), whose sum is σ = 86680. Its totient is φ = 84888.

The previous prime is 85781. The next prime is 85793. The reversal of 85783 is 38758.

85783 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 38758 = 2 ⋅19379.

It is a cyclic number.

It is not a de Polignac number, because 85783 - 2¹ = 85781 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 (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, 285 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (21670).

2⁸⁵⁷⁸³ is an apocalyptic number.

85783 is a deficient number, since it is larger than the sum of its proper divisors (897).

85783 is a wasteful number, since it uses less digits than its factorization.

85783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its digits is 6720, while the sum is 31.

The square root of 85783 is about 292.8873503585. The cubic root of 85783 is about 44.1028928092.

It can be divided in two parts, 85 and 783, that added together give a palindrome (868).

The spelling of 85783 in words is "eighty-five thousand, seven hundred eighty-three".