86730019 has 2 divisors, whose sum is σ = 86730020. Its totient is φ = 86730018.

The previous prime is 86730001. The next prime is 86730029. The reversal of 86730019 is 91003768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86730019 - 2⁷ = 86729891 is a prime.

It is a super-2 number, since 2×86730019² = 15044192391480722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86730029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43365009 + 43365010.

It is an arithmetic number, because the mean of its divisors is an integer number (43365010).

Almost surely, 2^86730019 is an apocalyptic number.

86730019 is a deficient number, since it is larger than the sum of its proper divisors (1).

86730019 is an equidigital number, since it uses as much as digits as its factorization.

86730019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 86730019 is about 9312.8953070460. The cubic root of 86730019 is about 442.6459352464.

The spelling of 86730019 in words is "eighty-six million, seven hundred thirty thousand, nineteen".