128587087 has 2 divisors, whose sum is σ = 128587088. Its totient is φ = 128587086.

The previous prime is 128587057. The next prime is 128587097. The reversal of 128587087 is 780785821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128587087 - 2⁷ = 128586959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128587007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64293543 + 64293544.

It is an arithmetic number, because the mean of its divisors is an integer number (64293544).

Almost surely, 2^128587087 is an apocalyptic number.

128587087 is a deficient number, since it is larger than the sum of its proper divisors (1).

128587087 is an equidigital number, since it uses as much as digits as its factorization.

128587087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250880, while the sum is 46.

The square root of 128587087 is about 11339.6246410540. The cubic root of 128587087 is about 504.7377483547.

The spelling of 128587087 in words is "one hundred twenty-eight million, five hundred eighty-seven thousand, eighty-seven".