535685 has 4 divisors (see below), whose sum is σ = 642828. Its totient is φ = 428544.

The previous prime is 535679. The next prime is 535697. The reversal of 535685 is 586535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586535 = 5 ⋅117307.

It can be written as a sum of positive squares in 2 ways, for example, as 334084 + 201601 = 578^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 535685 - 2⁴ = 535669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 53564 + ... + 53573.

It is an arithmetic number, because the mean of its divisors is an integer number (160707).

2⁵³⁵⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

535685 is a deficient number, since it is larger than the sum of its proper divisors (107143).

535685 is a wasteful number, since it uses less digits than its factorization.

535685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107142.

The product of its digits is 18000, while the sum is 32.

The square root of 535685 is about 731.9050484865. The cubic root of 535685 is about 81.2150461089.

The spelling of 535685 in words is "five hundred thirty-five thousand, six hundred eighty-five".