535665 has 32 divisors (see below), whose sum is σ = 959616. Its totient is φ = 253440.

The previous prime is 535663. The next prime is 535669. The reversal of 535665 is 566535.

It is not a de Polignac number, because 535665 - 2¹ = 535663 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (535663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7962 + ... + 8028.

It is an arithmetic number, because the mean of its divisors is an integer number (29988).

2⁵³⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

535665 is a deficient number, since it is larger than the sum of its proper divisors (423951).

535665 is a wasteful number, since it uses less digits than its factorization.

535665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129.

The product of its digits is 13500, while the sum is 30.

The square root of 535665 is about 731.8913853845. The cubic root of 535665 is about 81.2140353650.

The spelling of 535665 in words is "five hundred thirty-five thousand, six hundred sixty-five".