86694719 has 2 divisors, whose sum is σ = 86694720. Its totient is φ = 86694718.

The previous prime is 86694691. The next prime is 86694733. The reversal of 86694719 is 91749668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86694719 - 2⁸ = 86694463 is a prime.

It is a super-2 number, since 2×86694719² = 15031948604977922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86694749) 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, 43347359 + 43347360.

It is an arithmetic number, because the mean of its divisors is an integer number (43347360).

Almost surely, 2^86694719 is an apocalyptic number.

86694719 is a deficient number, since it is larger than the sum of its proper divisors (1).

86694719 is an equidigital number, since it uses as much as digits as its factorization.

86694719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 86694719 is about 9310.9998926001. Note that the first 3 decimals coincide. The cubic root of 86694719 is about 442.5858732975.

The spelling of 86694719 in words is "eighty-six million, six hundred ninety-four thousand, seven hundred nineteen".