87688087 has 2 divisors, whose sum is σ = 87688088. Its totient is φ = 87688086.

The previous prime is 87688079. The next prime is 87688109. The reversal of 87688087 is 78088678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87688087 - 2³ = 87688079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87688037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43844043 + 43844044.

It is an arithmetic number, because the mean of its divisors is an integer number (43844044).

Almost surely, 2^87688087 is an apocalyptic number.

87688087 is a deficient number, since it is larger than the sum of its proper divisors (1).

87688087 is an equidigital number, since it uses as much as digits as its factorization.

87688087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 52.

The square root of 87688087 is about 9364.1917430177. The cubic root of 87688087 is about 444.2698745498.

The spelling of 87688087 in words is "eighty-seven million, six hundred eighty-eight thousand, eighty-seven".