535865 has 8 divisors (see below), whose sum is σ = 701568. Its totient is φ = 389680.

The previous prime is 535861. The next prime is 535879. The reversal of 535865 is 568535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 535865 - 2² = 535861 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 535865.

It is not an unprimeable number, because it can be changed into a prime (535861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4817 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (87696).

2⁵³⁵⁸⁶⁵ is an apocalyptic number.

535865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

535865 is a deficient number, since it is larger than the sum of its proper divisors (165703).

535865 is a wasteful number, since it uses less digits than its factorization.

535865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9759.

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

The square root of 535865 is about 732.0280049288. The cubic root of 535865 is about 81.2241416727.

The spelling of 535865 in words is "five hundred thirty-five thousand, eight hundred sixty-five".