86730881 has 2 divisors, whose sum is σ = 86730882. Its totient is φ = 86730880.

The previous prime is 86730869. The next prime is 86730893. The reversal of 86730881 is 18803768.

It is a balanced prime because it is at equal distance from previous prime (86730869) and next prime (86730893).

It can be written as a sum of positive squares in only one way, i.e., 67502656 + 19228225 = 8216^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 86730881 - 2⁶ = 86730817 is a prime.

It is a super-2 number, since 2×86730881² = 15044491438072322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86739881) 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, 43365440 + 43365441.

It is an arithmetic number, because the mean of its divisors is an integer number (43365441).

Almost surely, 2^86730881 is an apocalyptic number.

It is an amenable number.

86730881 is a deficient number, since it is larger than the sum of its proper divisors (1).

86730881 is an equidigital number, since it uses as much as digits as its factorization.

86730881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 86730881 is about 9312.9415868457. The cubic root of 86730881 is about 442.6474017111.

The spelling of 86730881 in words is "eighty-six million, seven hundred thirty thousand, eight hundred eighty-one".