86667169 has 2 divisors, whose sum is σ = 86667170. Its totient is φ = 86667168.

The previous prime is 86667149. The next prime is 86667181. The reversal of 86667169 is 96176668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47128225 + 39538944 = 6865^2 + 6288^2 .

It is a cyclic number.

It is not a de Polignac number, because 86667169 - 2¹¹ = 86665121 is a prime.

It is a super-2 number, since 2×86667169² = 15022396364949122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86667149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43333584 + 43333585.

It is an arithmetic number, because the mean of its divisors is an integer number (43333585).

Almost surely, 2^86667169 is an apocalyptic number.

It is an amenable number.

86667169 is a deficient number, since it is larger than the sum of its proper divisors (1).

86667169 is an equidigital number, since it uses as much as digits as its factorization.

86667169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 86667169 is about 9309.5203421014. The cubic root of 86667169 is about 442.5389864253.

The spelling of 86667169 in words is "eighty-six million, six hundred sixty-seven thousand, one hundred sixty-nine".