86630881 has 2 divisors, whose sum is σ = 86630882. Its totient is φ = 86630880.

The previous prime is 86630851. The next prime is 86630897. The reversal of 86630881 is 18803668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83448225 + 3182656 = 9135^2 + 1784^2 .

It is a cyclic number.

It is not a de Polignac number, because 86630881 - 2¹⁹ = 86106593 is a prime.

It is a super-2 number, since 2×86630881² = 15009819085672322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86630851) 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, 43315440 + 43315441.

It is an arithmetic number, because the mean of its divisors is an integer number (43315441).

Almost surely, 2^86630881 is an apocalyptic number.

It is an amenable number.

86630881 is a deficient number, since it is larger than the sum of its proper divisors (1).

86630881 is an equidigital number, since it uses as much as digits as its factorization.

86630881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 86630881 is about 9307.5711654545. The cubic root of 86630881 is about 442.4772133350.

The spelling of 86630881 in words is "eighty-six million, six hundred thirty thousand, eight hundred eighty-one".