533640 has 32 divisors (see below), whose sum is σ = 1601280. Its totient is φ = 142272.

The previous prime is 533633. The next prime is 533641. The reversal of 533640 is 46335.

It is not an unprimeable number, because it can be changed into a prime (533641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (50040).

2⁵³³⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

533640 is an abundant number, since it is smaller than the sum of its proper divisors (1067640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

533640 is a wasteful number, since it uses less digits than its factorization.

533640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461 (or 4457 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 533640 is about 730.5066734808. The cubic root of 533640 is about 81.1115670345. Note that the first 3 decimals are identical.

Adding to 533640 its reverse (46335), we get a palindrome (579975).

The spelling of 533640 in words is "five hundred thirty-three thousand, six hundred forty".