115687871 has 4 divisors (see below), whose sum is σ = 124586952. Its totient is φ = 106788792.

The previous prime is 115687841. The next prime is 115687883. The reversal of 115687871 is 178786511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115687871 - 2¹⁰ = 115686847 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 (115687811) 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, 4449521 + ... + 4449546.

It is an arithmetic number, because the mean of its divisors is an integer number (31146738).

Almost surely, 2^115687871 is an apocalyptic number.

115687871 is a deficient number, since it is larger than the sum of its proper divisors (8899081).

115687871 is an equidigital number, since it uses as much as digits as its factorization.

115687871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899080.

The product of its digits is 94080, while the sum is 44.

The square root of 115687871 is about 10755.8296286247. The cubic root of 115687871 is about 487.2620742119.

The spelling of 115687871 in words is "one hundred fifteen million, six hundred eighty-seven thousand, eight hundred seventy-one".