86748689 has 2 divisors, whose sum is σ = 86748690. Its totient is φ = 86748688.

The previous prime is 86748679. The next prime is 86748707. The reversal of 86748689 is 98684768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84953089 + 1795600 = 9217^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 86748689 - 2²⁰ = 85700113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86748619) 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, 43374344 + 43374345.

It is an arithmetic number, because the mean of its divisors is an integer number (43374345).

Almost surely, 2^86748689 is an apocalyptic number.

It is an amenable number.

86748689 is a deficient number, since it is larger than the sum of its proper divisors (1).

86748689 is an equidigital number, since it uses as much as digits as its factorization.

86748689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 56.

The square root of 86748689 is about 9313.8976266652. The cubic root of 86748689 is about 442.6776951329.

The spelling of 86748689 in words is "eighty-six million, seven hundred forty-eight thousand, six hundred eighty-nine".