115680289 has 2 divisors, whose sum is σ = 115680290. Its totient is φ = 115680288.

The previous prime is 115680281. The next prime is 115680307. The reversal of 115680289 is 982086511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112529664 + 3150625 = 10608^2 + 1775^2 .

It is a cyclic number.

It is not a de Polignac number, because 115680289 - 2³ = 115680281 is a prime.

It is a super-3 number, since 3×115680289³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (115680281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57840144 + 57840145.

It is an arithmetic number, because the mean of its divisors is an integer number (57840145).

Almost surely, 2^115680289 is an apocalyptic number.

It is an amenable number.

115680289 is a deficient number, since it is larger than the sum of its proper divisors (1).

115680289 is an equidigital number, since it uses as much as digits as its factorization.

115680289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 115680289 is about 10755.4771628227. The cubic root of 115680289 is about 487.2514291843.

The spelling of 115680289 in words is "one hundred fifteen million, six hundred eighty thousand, two hundred eighty-nine".