12688606 has 8 divisors (see below), whose sum is σ = 21751920. Its totient is φ = 5437968.

The previous prime is 12688597. The next prime is 12688607. The reversal of 12688606 is 60688621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12688606² = 322001444446472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688607) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 453151 + ... + 453178.

It is an arithmetic number, because the mean of its divisors is an integer number (2718990).

Almost surely, 2^12688606 is an apocalyptic number.

12688606 is a deficient number, since it is larger than the sum of its proper divisors (9063314).

12688606 is an equidigital number, since it uses as much as digits as its factorization.

12688606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906338.

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

The square root of 12688606 is about 3562.1069607748. The cubic root of 12688606 is about 233.2408617704.

The spelling of 12688606 in words is "twelve million, six hundred eighty-eight thousand, six hundred six".