12866086 has 4 divisors (see below), whose sum is σ = 19299132. Its totient is φ = 6433042.

The previous prime is 12866083. The next prime is 12866089. The reversal of 12866086 is 68066821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68066821 = 23 ⋅2959427.

It is an interprime number because it is at equal distance from previous prime (12866083) and next prime (12866089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216520 + ... + 3216523.

It is an arithmetic number, because the mean of its divisors is an integer number (4824783).

Almost surely, 2^12866086 is an apocalyptic number.

12866086 is a deficient number, since it is larger than the sum of its proper divisors (6433046).

12866086 is an equidigital number, since it uses as much as digits as its factorization.

12866086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433045.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 12866086 is about 3586.9326729115. The cubic root of 12866086 is about 234.3233045333.

The spelling of 12866086 in words is "twelve million, eight hundred sixty-six thousand, eighty-six".