533644 has 12 divisors (see below), whose sum is σ = 945000. Its totient is φ = 263648.

The previous prime is 533641. The next prime is 533671. The reversal of 533644 is 446335.

It is not an unprimeable number, because it can be changed into a prime (533641) 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, 394 + ... + 1105.

It is an arithmetic number, because the mean of its divisors is an integer number (78750).

2⁵³³⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

533644 is a deficient number, since it is larger than the sum of its proper divisors (411356).

533644 is a wasteful number, since it uses less digits than its factorization.

533644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592 (or 1590 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 533644 is about 730.5094113015. The cubic root of 533644 is about 81.1117696964. Note that the first 3 decimals are identical.

Adding to 533644 its reverse (446335), we get a palindrome (979979).

The spelling of 533644 in words is "five hundred thirty-three thousand, six hundred forty-four".