538504686 has 20 divisors (see below), whose sum is σ = 1206649752. Its totient is φ = 179501508.

The previous prime is 538504679. The next prime is 538504739. The reversal of 538504686 is 686405835.

538504686 is a `hidden beast` number, since 538 + 50 + 4 + 68 + 6 = 666.

538504686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1661890 + ... + 1662213.

Almost surely, 2^538504686 is an apocalyptic number.

538504686 is an abundant number, since it is smaller than the sum of its proper divisors (668145066).

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

538504686 is a wasteful number, since it uses less digits than its factorization.

538504686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324117 (or 3324108 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 538504686 is about 23205.7037385208. The cubic root of 538504686 is about 813.5729407295.

The spelling of 538504686 in words is "five hundred thirty-eight million, five hundred four thousand, six hundred eighty-six".