115888687 has 4 divisors (see below), whose sum is σ = 118075320. Its totient is φ = 113702056.

The previous prime is 115888681. The next prime is 115888693. The reversal of 115888687 is 786888511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786888511 = 257 ⋅3061823.

It is an interprime number because it is at equal distance from previous prime (115888681) and next prime (115888693).

It is a cyclic number.

It is not a de Polignac number, because 115888687 - 2³ = 115888679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115888681) 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, 1093237 + ... + 1093342.

It is an arithmetic number, because the mean of its divisors is an integer number (29518830).

Almost surely, 2^115888687 is an apocalyptic number.

115888687 is a deficient number, since it is larger than the sum of its proper divisors (2186633).

115888687 is an equidigital number, since it uses as much as digits as its factorization.

115888687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186632.

The product of its digits is 860160, while the sum is 52.

The square root of 115888687 is about 10765.1607976844. The cubic root of 115888687 is about 487.5438480832.

The spelling of 115888687 in words is "one hundred fifteen million, eight hundred eighty-eight thousand, six hundred eighty-seven".