535643 has 4 divisors (see below), whose sum is σ = 538560. Its totient is φ = 532728.

The previous prime is 535637. The next prime is 535663. The reversal of 535643 is 346535.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 535643 - 2⁴ = 535627 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1163 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (134640).

2⁵³⁵⁶⁴³ is an apocalyptic number.

535643 is a deficient number, since it is larger than the sum of its proper divisors (2917).

535643 is a wasteful number, since it uses less digits than its factorization.

535643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916.

The product of its digits is 5400, while the sum is 26.

The square root of 535643 is about 731.8763556777. The cubic root of 535643 is about 81.2129235175.

The spelling of 535643 in words is "five hundred thirty-five thousand, six hundred forty-three".