533668509 has 12 divisors (see below), whose sum is σ = 840932352. Its totient is φ = 323435400.

The previous prime is 533668481. The next prime is 533668519. The reversal of 533668509 is 905866335.

533668509 is a `hidden beast` number, since 53 + 36 + 68 + 509 = 666.

It is not a de Polignac number, because 533668509 - 2⁷ = 533668381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533668519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2695197 + ... + 2695394.

It is an arithmetic number, because the mean of its divisors is an integer number (70077696).

Almost surely, 2^533668509 is an apocalyptic number.

It is an amenable number.

533668509 is a deficient number, since it is larger than the sum of its proper divisors (307263843).

533668509 is a wasteful number, since it uses less digits than its factorization.

533668509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390608 (or 5390605 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 533668509 is about 23101.2663938582. The cubic root of 533668509 is about 811.1301143432.

The spelling of 533668509 in words is "five hundred thirty-three million, six hundred sixty-eight thousand, five hundred nine".