85385 has 4 divisors (see below), whose sum is σ = 102468. Its totient is φ = 68304.

The previous prime is 85381. The next prime is 85411. The reversal of 85385 is 58358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58358 = 2 ⋅29179.

It can be written as a sum of positive squares in 2 ways, for example, as 33856 + 51529 = 184^2 + 227^2 .

It is a cyclic number.

It is not a de Polignac number, because 85385 - 2² = 85381 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 (85381) 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, 8534 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (25617).

2⁸⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

85385 is a deficient number, since it is larger than the sum of its proper divisors (17083).

85385 is a wasteful number, since it uses less digits than its factorization.

85385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17082.

The product of its digits is 4800, while the sum is 29.

The square root of 85385 is about 292.2071183253. The cubic root of 85385 is about 44.0345802538.

The spelling of 85385 in words is "eighty-five thousand, three hundred eighty-five".