535999 has 2 divisors, whose sum is σ = 536000. Its totient is φ = 535998.

The previous prime is 535991. The next prime is 536017. The reversal of 535999 is 999535.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 535999 - 2³ = 535991 is a prime.

535999 is a modest number, since divided by 999 gives 535 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 535999.

It is not a weakly prime, because it can be changed into another prime (535991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267999 + 268000.

It is an arithmetic number, because the mean of its divisors is an integer number (268000).

2⁵³⁵⁹⁹⁹ is an apocalyptic number.

535999 is a deficient number, since it is larger than the sum of its proper divisors (1).

535999 is an equidigital number, since it uses as much as digits as its factorization.

535999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54675, while the sum is 40.

The square root of 535999 is about 732.1195257607. The cubic root of 535999 is about 81.2309114921.

The spelling of 535999 in words is "five hundred thirty-five thousand, nine hundred ninety-nine".