115663688 has 64 divisors (see below), whose sum is σ = 261792000. Its totient is φ = 46835712.

The previous prime is 115663637. The next prime is 115663703. The reversal of 115663688 is 886366511.

It is a super-2 number, since 2×115663688² = 26756177443522688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114128 + ... + 115136.

It is an arithmetic number, because the mean of its divisors is an integer number (4090500).

Almost surely, 2^115663688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115663688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130896000).

115663688 is an abundant number, since it is smaller than the sum of its proper divisors (146128312).

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

115663688 is a wasteful number, since it uses less digits than its factorization.

115663688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1130 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 115663688 is about 10754.7053888054. The cubic root of 115663688 is about 487.2281199757.

The spelling of 115663688 in words is "one hundred fifteen million, six hundred sixty-three thousand, six hundred eighty-eight".