538763688 has 24 divisors (see below), whose sum is σ = 1459151850. Its totient is φ = 179587872.

The previous prime is 538763681. The next prime is 538763699. The reversal of 538763688 is 886367835.

It is a happy number.

538763688 is a `hidden beast` number, since 538 + 76 + 36 + 8 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 303386724 + 235376964 = 17418^2 + 15342^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×538763688² = 580532623014722688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (538763681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3741343 + ... + 3741486.

Almost surely, 2^538763688 is an apocalyptic number.

It is an amenable number.

538763688 is an abundant number, since it is smaller than the sum of its proper divisors (920388162).

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

538763688 is a wasteful number, since it uses less digits than its factorization.

538763688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482841 (or 7482834 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 538763688 is about 23211.2836353356. The cubic root of 538763688 is about 813.7033532408.

The spelling of 538763688 in words is "five hundred thirty-eight million, seven hundred sixty-three thousand, six hundred eighty-eight".