86006021 has 2 divisors, whose sum is σ = 86006022. Its totient is φ = 86006020.

The previous prime is 86006003. The next prime is 86006033. The reversal of 86006021 is 12060068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56085121 + 29920900 = 7489^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 86006021 - 2²⁶ = 18897157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86006071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43003010 + 43003011.

It is an arithmetic number, because the mean of its divisors is an integer number (43003011).

Almost surely, 2^86006021 is an apocalyptic number.

It is an amenable number.

86006021 is a deficient number, since it is larger than the sum of its proper divisors (1).

86006021 is an equidigital number, since it uses as much as digits as its factorization.

86006021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 86006021 is about 9273.9431203777. The cubic root of 86006021 is about 441.4107970596.

Adding to 86006021 its reverse (12060068), we get a palindrome (98066089).

The spelling of 86006021 in words is "eighty-six million, six thousand, twenty-one".