86671069 has 2 divisors, whose sum is σ = 86671070. Its totient is φ = 86671068.

The previous prime is 86671063. The next prime is 86671073. The reversal of 86671069 is 96017668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80766169 + 5904900 = 8987^2 + 2430^2 .

It is a cyclic number.

It is not a de Polignac number, because 86671069 - 2⁹ = 86670557 is a prime.

It is a super-2 number, since 2×86671069² = 15023748403205522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86671063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43335534 + 43335535.

It is an arithmetic number, because the mean of its divisors is an integer number (43335535).

Almost surely, 2^86671069 is an apocalyptic number.

It is an amenable number.

86671069 is a deficient number, since it is larger than the sum of its proper divisors (1).

86671069 is an equidigital number, since it uses as much as digits as its factorization.

86671069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 86671069 is about 9309.7298027386. The cubic root of 86671069 is about 442.5456243721.

The spelling of 86671069 in words is "eighty-six million, six hundred seventy-one thousand, sixty-nine".