536809 has 16 divisors (see below), whose sum is σ = 701568. Its totient is φ = 398592.

The previous prime is 536803. The next prime is 536839. The reversal of 536809 is 908635.

It is a cyclic number.

It is not a de Polignac number, because 536809 - 2³ = 536801 is a prime.

536809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (536801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (43848).

2⁵³⁶⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

536809 is a deficient number, since it is larger than the sum of its proper divisors (164759).

536809 is a wasteful number, since it uses less digits than its factorization.

536809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 536809 is about 732.6725052846. The cubic root of 536809 is about 81.2718095299.

The spelling of 536809 in words is "five hundred thirty-six thousand, eight hundred nine".