10865857 has 2 divisors, whose sum is σ = 10865858. Its totient is φ = 10865856.

The previous prime is 10865851. The next prime is 10865887. The reversal of 10865857 is 75856801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7568001 + 3297856 = 2751^2 + 1816^2 .

It is an emirp because it is prime and its reverse (75856801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10865857 - 2³ = 10865849 is a prime.

It is a super-3 number, since 3×10865857³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (10865851) 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, 5432928 + 5432929.

It is an arithmetic number, because the mean of its divisors is an integer number (5432929).

Almost surely, 2^10865857 is an apocalyptic number.

It is an amenable number.

10865857 is a deficient number, since it is larger than the sum of its proper divisors (1).

10865857 is an equidigital number, since it uses as much as digits as its factorization.

10865857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 10865857 is about 3296.3399399941. The cubic root of 10865857 is about 221.4902746827.

The spelling of 10865857 in words is "ten million, eight hundred sixty-five thousand, eight hundred fifty-seven".