285598 has 4 divisors (see below), whose sum is σ = 428400. Its totient is φ = 142798.

The previous prime is 285569. The next prime is 285599. The reversal of 285598 is 895582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 895582 = 2 ⋅447791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285599) 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 as a sum of consecutive naturals, namely, 71398 + ... + 71401.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

2²⁸⁵⁵⁹⁸ is an apocalyptic number.

285598 is a deficient number, since it is larger than the sum of its proper divisors (142802).

285598 is a wasteful number, since it uses less digits than its factorization.

285598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142801.

The product of its digits is 28800, while the sum is 37.

The square root of 285598 is about 534.4136974292. The cubic root of 285598 is about 65.8544389237.

The spelling of 285598 in words is "two hundred eighty-five thousand, five hundred ninety-eight".