535686 has 32 divisors (see below), whose sum is σ = 1167360. Its totient is φ = 163296.

The previous prime is 535679. The next prime is 535697. The reversal of 535686 is 686535.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

535686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4155 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (36480).

2⁵³⁵⁶⁸⁶ is an apocalyptic number.

535686 is an abundant number, since it is smaller than the sum of its proper divisors (631674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

535686 is a wasteful number, since it uses less digits than its factorization.

535686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

The product of its digits is 21600, while the sum is 33.

The square root of 535686 is about 731.9057316349. The cubic root of 535686 is about 81.2150966455.

Adding to 535686 its reverse (686535), we get a palindrome (1222221).

It can be divided in two parts, 535 and 686, that added together give a palindrome (1221).

The spelling of 535686 in words is "five hundred thirty-five thousand, six hundred eighty-six".