10686857 has 2 divisors, whose sum is σ = 10686858. Its totient is φ = 10686856.

The previous prime is 10686817. The next prime is 10686859. The reversal of 10686857 is 75868601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10394176 + 292681 = 3224^2 + 541^2 .

It is a cyclic number.

It is not a de Polignac number, because 10686857 - 2⁸ = 10686601 is a prime.

It is a super-2 number, since 2×10686857² = 228417825076898, which contains 22 as substring.

Together with 10686859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10686859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5343428 + 5343429.

It is an arithmetic number, because the mean of its divisors is an integer number (5343429).

Almost surely, 2^10686857 is an apocalyptic number.

It is an amenable number.

10686857 is a deficient number, since it is larger than the sum of its proper divisors (1).

10686857 is an equidigital number, since it uses as much as digits as its factorization.

10686857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 10686857 is about 3269.0758632984. The cubic root of 10686857 is about 220.2672853275.

The spelling of 10686857 in words is "ten million, six hundred eighty-six thousand, eight hundred fifty-seven".