115663487 has 2 divisors, whose sum is σ = 115663488. Its totient is φ = 115663486.

The previous prime is 115663459. The next prime is 115663489. The reversal of 115663487 is 784366511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115663487 - 2¹⁸ = 115401343 is a prime.

Together with 115663489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115663489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57831743 + 57831744.

It is an arithmetic number, because the mean of its divisors is an integer number (57831744).

Almost surely, 2^115663487 is an apocalyptic number.

115663487 is a deficient number, since it is larger than the sum of its proper divisors (1).

115663487 is an equidigital number, since it uses as much as digits as its factorization.

115663487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 115663487 is about 10754.6960440544. The cubic root of 115663487 is about 487.2278377410.

The spelling of 115663487 in words is "one hundred fifteen million, six hundred sixty-three thousand, four hundred eighty-seven".