12686494 has 4 divisors (see below), whose sum is σ = 19029744. Its totient is φ = 6343246.

The previous prime is 12686491. The next prime is 12686503. The reversal of 12686494 is 49468621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49468621 = 61 ⋅810961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686491) 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, 3171622 + ... + 3171625.

It is an arithmetic number, because the mean of its divisors is an integer number (4757436).

Almost surely, 2^12686494 is an apocalyptic number.

12686494 is a deficient number, since it is larger than the sum of its proper divisors (6343250).

12686494 is an equidigital number, since it uses as much as digits as its factorization.

12686494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343249.

The product of its digits is 82944, while the sum is 40.

The square root of 12686494 is about 3561.8104946782. The cubic root of 12686494 is about 233.2279201851.

The spelling of 12686494 in words is "twelve million, six hundred eighty-six thousand, four hundred ninety-four".