12704686 has 4 divisors (see below), whose sum is σ = 19057032. Its totient is φ = 6352342.

The previous prime is 12704663. The next prime is 12704693. The reversal of 12704686 is 68640721.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12704686² = 322818092717192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3176170 + ... + 3176173.

It is an arithmetic number, because the mean of its divisors is an integer number (4764258).

Almost surely, 2^12704686 is an apocalyptic number.

12704686 is a deficient number, since it is larger than the sum of its proper divisors (6352346).

12704686 is an equidigital number, since it uses as much as digits as its factorization.

12704686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6352345.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 12704686 is about 3564.3633372595. The cubic root of 12704686 is about 233.3393472373.

The spelling of 12704686 in words is "twelve million, seven hundred four thousand, six hundred eighty-six".