86626696889 has 2 divisors, whose sum is σ = 86626696890. Its totient is φ = 86626696888.

The previous prime is 86626696883. The next prime is 86626696927. The reversal of 86626696889 is 98869662668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64221696400 + 22405000489 = 253420^2 + 149683^2 .

It is a cyclic number.

It is not a de Polignac number, because 86626696889 - 2⁸ = 86626696633 is a prime.

It is a super-2 number, since 2×86626696889² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86626696883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43313348444 + 43313348445.

It is an arithmetic number, because the mean of its divisors is an integer number (43313348445).

Almost surely, 2^86626696889 is an apocalyptic number.

It is an amenable number.

86626696889 is a deficient number, since it is larger than the sum of its proper divisors (1).

86626696889 is an equidigital number, since it uses as much as digits as its factorization.

86626696889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 644972544, while the sum is 74.

The spelling of 86626696889 in words is "eighty-six billion, six hundred twenty-six million, six hundred ninety-six thousand, eight hundred eighty-nine".