115555668 has 12 divisors (see below), whose sum is σ = 269629920. Its totient is φ = 38518552.

The previous prime is 115555667. The next prime is 115555679. The reversal of 115555668 is 866555511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×115555668² = 26706224813852448, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115555667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4814808 + ... + 4814831.

It is an arithmetic number, because the mean of its divisors is an integer number (22469160).

Almost surely, 2^115555668 is an apocalyptic number.

It is an amenable number.

115555668 is an abundant number, since it is smaller than the sum of its proper divisors (154074252).

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

115555668 is a wasteful number, since it uses less digits than its factorization.

115555668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629646 (or 9629644 counting only the distinct ones).

The product of its digits is 180000, while the sum is 42.

The square root of 115555668 is about 10749.6822278614. The cubic root of 115555668 is about 487.0763962584.

The spelling of 115555668 in words is "one hundred fifteen million, five hundred fifty-five thousand, six hundred sixty-eight".