12086857 has 2 divisors, whose sum is σ = 12086858. Its totient is φ = 12086856.

The previous prime is 12086843. The next prime is 12086863. The reversal of 12086857 is 75868021.

12086857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8415801 + 3671056 = 2901^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 12086857 - 2⁷ = 12086729 is a prime.

It is a super-2 number, since 2×12086857² = 292184224276898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12086887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6043428 + 6043429.

It is an arithmetic number, because the mean of its divisors is an integer number (6043429).

Almost surely, 2^12086857 is an apocalyptic number.

It is an amenable number.

12086857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12086857 is an equidigital number, since it uses as much as digits as its factorization.

12086857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12086857 is about 3476.6157394800. The cubic root of 12086857 is about 229.4938902847.

The spelling of 12086857 in words is "twelve million, eighty-six thousand, eight hundred fifty-seven".