115666688 has 18 divisors (see below), whose sum is σ = 230882064. Its totient is φ = 57833216.

The previous prime is 115666669. The next prime is 115666693. The reversal of 115666688 is 886666511.

It is a plaindrome in base 10.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 225656 + ... + 226167.

Almost surely, 2^115666688 is an apocalyptic number.

It is an amenable number.

115666688 is a deficient number, since it is larger than the sum of its proper divisors (115215376).

115666688 is an frugal number, since it uses more digits than its factorization.

115666688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451839 (or 451825 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 115666688 is about 10754.8448617356. The cubic root of 115666688 is about 487.2323323946.

The spelling of 115666688 in words is "one hundred fifteen million, six hundred sixty-six thousand, six hundred eighty-eight".