86021017 has 2 divisors, whose sum is σ = 86021018. Its totient is φ = 86021016.

The previous prime is 86021011. The next prime is 86021021. The reversal of 86021017 is 71012068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 41718681 = 6656^2 + 6459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86021017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86020982 and 86021000.

It is not a weakly prime, because it can be changed into another prime (86021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43010508 + 43010509.

It is an arithmetic number, because the mean of its divisors is an integer number (43010509).

Almost surely, 2^86021017 is an apocalyptic number.

It is an amenable number.

86021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

86021017 is an equidigital number, since it uses as much as digits as its factorization.

86021017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 86021017 is about 9274.7515869699. The cubic root of 86021017 is about 441.4364503474.

The spelling of 86021017 in words is "eighty-six million, twenty-one thousand, seventeen".