86665487 has 2 divisors, whose sum is σ = 86665488. Its totient is φ = 86665486.

The previous prime is 86665471. The next prime is 86665489. The reversal of 86665487 is 78456668.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86665487 - 2⁴ = 86665471 is a prime.

Together with 86665489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86665489) 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, 43332743 + 43332744.

It is an arithmetic number, because the mean of its divisors is an integer number (43332744).

Almost surely, 2^86665487 is an apocalyptic number.

86665487 is a deficient number, since it is larger than the sum of its proper divisors (1).

86665487 is an equidigital number, since it uses as much as digits as its factorization.

86665487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 50.

The square root of 86665487 is about 9309.4300040335. The cubic root of 86665487 is about 442.5361235365.

The spelling of 86665487 in words is "eighty-six million, six hundred sixty-five thousand, four hundred eighty-seven".