86220587 has 2 divisors, whose sum is σ = 86220588. Its totient is φ = 86220586.

The previous prime is 86220557. The next prime is 86220611. The reversal of 86220587 is 78502268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86220587 - 2⁶ = 86220523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86220587.

It is not a weakly prime, because it can be changed into another prime (86220527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43110293 + 43110294.

It is an arithmetic number, because the mean of its divisors is an integer number (43110294).

Almost surely, 2^86220587 is an apocalyptic number.

86220587 is a deficient number, since it is larger than the sum of its proper divisors (1).

86220587 is an equidigital number, since it uses as much as digits as its factorization.

86220587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 86220587 is about 9285.5041327868. The cubic root of 86220587 is about 441.7775663289. Note that the first 3 decimals are identical.

The spelling of 86220587 in words is "eighty-six million, two hundred twenty thousand, five hundred eighty-seven".