86566387 has 2 divisors, whose sum is σ = 86566388. Its totient is φ = 86566386.

The previous prime is 86566379. The next prime is 86566399. The reversal of 86566387 is 78366568.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86566387 - 2³ = 86566379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86566387.

It is not a weakly prime, because it can be changed into another prime (86566367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43283193 + 43283194.

It is an arithmetic number, because the mean of its divisors is an integer number (43283194).

Almost surely, 2^86566387 is an apocalyptic number.

86566387 is a deficient number, since it is larger than the sum of its proper divisors (1).

86566387 is an equidigital number, since it uses as much as digits as its factorization.

86566387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 86566387 is about 9304.1059215811. The cubic root of 86566387 is about 442.3673825616.

The spelling of 86566387 in words is "eighty-six million, five hundred sixty-six thousand, three hundred eighty-seven".