12306986 has 4 divisors (see below), whose sum is σ = 18460482. Its totient is φ = 6153492.

The previous prime is 12306979. The next prime is 12307007. The reversal of 12306986 is 68960321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68960321 = 59 ⋅1168819.

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 231361 = 3475^2 + 481^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3076745 + ... + 3076748.

Almost surely, 2^12306986 is an apocalyptic number.

12306986 is a deficient number, since it is larger than the sum of its proper divisors (6153496).

12306986 is an equidigital number, since it uses as much as digits as its factorization.

12306986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153495.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12306986 is about 3508.1314114497. The cubic root of 12306986 is about 230.8787179664.

The spelling of 12306986 in words is "twelve million, three hundred six thousand, nine hundred eighty-six".