86689087 has 2 divisors, whose sum is σ = 86689088. Its totient is φ = 86689086.

The previous prime is 86689081. The next prime is 86689121. The reversal of 86689087 is 78098668.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86689087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86689081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43344543 + 43344544.

It is an arithmetic number, because the mean of its divisors is an integer number (43344544).

Almost surely, 2^86689087 is an apocalyptic number.

86689087 is a deficient number, since it is larger than the sum of its proper divisors (1).

86689087 is an equidigital number, since it uses as much as digits as its factorization.

86689087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 86689087 is about 9310.6974497081. The cubic root of 86689087 is about 442.5762891012.

The spelling of 86689087 in words is "eighty-six million, six hundred eighty-nine thousand, eighty-seven".