115666687 has 8 divisors (see below), whose sum is σ = 116977680. Its totient is φ = 114360960.

The previous prime is 115666669. The next prime is 115666693. The reversal of 115666687 is 786666511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115666687 - 2¹¹ = 115664639 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 (115666697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56512 + ... + 58522.

It is an arithmetic number, because the mean of its divisors is an integer number (14622210).

Almost surely, 2^115666687 is an apocalyptic number.

115666687 is a deficient number, since it is larger than the sum of its proper divisors (1310993).

115666687 is a wasteful number, since it uses less digits than its factorization.

115666687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633.

The product of its digits is 362880, while the sum is 46.

The square root of 115666687 is about 10754.8448152449. The cubic root of 115666687 is about 487.2323309905.

The spelling of 115666687 in words is "one hundred fifteen million, six hundred sixty-six thousand, six hundred eighty-seven".