115707689 has 4 divisors (see below), whose sum is σ = 116347140. Its totient is φ = 115068240.

The previous prime is 115707677. The next prime is 115707707. The reversal of 115707689 is 986707511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986707511 = 20441 ⋅48271.

It can be written as a sum of positive squares in 2 ways, for example, as 20976400 + 94731289 = 4580^2 + 9733^2 .

It is a cyclic number.

It is not a de Polignac number, because 115707689 - 2⁸ = 115707433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115707619) 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, 319454 + ... + 319815.

It is an arithmetic number, because the mean of its divisors is an integer number (29086785).

Almost surely, 2^115707689 is an apocalyptic number.

It is an amenable number.

115707689 is a deficient number, since it is larger than the sum of its proper divisors (639451).

115707689 is an equidigital number, since it uses as much as digits as its factorization.

115707689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639450.

The product of its (nonzero) digits is 105840, while the sum is 44.

The square root of 115707689 is about 10756.7508570200. The cubic root of 115707689 is about 487.2898962251.

The spelling of 115707689 in words is "one hundred fifteen million, seven hundred seven thousand, six hundred eighty-nine".