128737087 has 2 divisors, whose sum is σ = 128737088. Its totient is φ = 128737086.

The previous prime is 128737069. The next prime is 128737093. The reversal of 128737087 is 780737821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128737087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128734087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64368543 + 64368544.

It is an arithmetic number, because the mean of its divisors is an integer number (64368544).

Almost surely, 2^128737087 is an apocalyptic number.

128737087 is a deficient number, since it is larger than the sum of its proper divisors (1).

128737087 is an equidigital number, since it uses as much as digits as its factorization.

128737087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 128737087 is about 11346.2366888762. The cubic root of 128737087 is about 504.9339350887.

The spelling of 128737087 in words is "one hundred twenty-eight million, seven hundred thirty-seven thousand, eighty-seven".