12688774 has 16 divisors (see below), whose sum is σ = 21800448. Its totient is φ = 5425992.

The previous prime is 12688771. The next prime is 12688811. The reversal of 12688774 is 47788621.

It is a super-3 number, since 3×12688774³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12688774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688771) 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 in 7 ways as a sum of consecutive naturals, for example, 8899 + ... + 10225.

It is an arithmetic number, because the mean of its divisors is an integer number (1362528).

Almost surely, 2^12688774 is an apocalyptic number.

12688774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12688774 is a deficient number, since it is larger than the sum of its proper divisors (9111674).

12688774 is a wasteful number, since it uses less digits than its factorization.

12688774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019.

The product of its digits is 150528, while the sum is 43.

The square root of 12688774 is about 3562.1305422457. The cubic root of 12688774 is about 233.2418911531.

The spelling of 12688774 in words is "twelve million, six hundred eighty-eight thousand, seven hundred seventy-four".