10686889 has 2 divisors, whose sum is σ = 10686890. Its totient is φ = 10686888.

The previous prime is 10686887. The next prime is 10686899. The reversal of 10686889 is 98868601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10208025 + 478864 = 3195^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 10686889 - 2¹ = 10686887 is a prime.

It is a super-2 number, since 2×10686889² = 228419192996642, which contains 22 as substring.

Together with 10686887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10686887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5343444 + 5343445.

It is an arithmetic number, because the mean of its divisors is an integer number (5343445).

Almost surely, 2^10686889 is an apocalyptic number.

It is an amenable number.

10686889 is a deficient number, since it is larger than the sum of its proper divisors (1).

10686889 is an equidigital number, since it uses as much as digits as its factorization.

10686889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 10686889 is about 3269.0807576443. The cubic root of 10686889 is about 220.2675051784.

The spelling of 10686889 in words is "ten million, six hundred eighty-six thousand, eight hundred eighty-nine".