85623 has 4 divisors (see below), whose sum is σ = 114168. Its totient is φ = 57080.

The previous prime is 85621. The next prime is 85627. The reversal of 85623 is 32658.

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 85623 - 2¹ = 85621 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 85593 and 85602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14268 + ... + 14273.

It is an arithmetic number, because the mean of its divisors is an integer number (28542).

2⁸⁵⁶²³ is an apocalyptic number.

85623 is a deficient number, since it is larger than the sum of its proper divisors (28545).

85623 is a wasteful number, since it uses less digits than its factorization.

85623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28544.

The product of its digits is 1440, while the sum is 24.

The square root of 85623 is about 292.6140803174. The cubic root of 85623 is about 44.0754559256.

The spelling of 85623 in words is "eighty-five thousand, six hundred twenty-three".