12681016 has 8 divisors (see below), whose sum is σ = 23776920. Its totient is φ = 6340504.

The previous prime is 12681007. The next prime is 12681017. The reversal of 12681016 is 61018621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681017) 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 as a sum of consecutive naturals, namely, 792556 + ... + 792571.

It is an arithmetic number, because the mean of its divisors is an integer number (2972115).

Almost surely, 2^12681016 is an apocalyptic number.

It is an amenable number.

12681016 is a deficient number, since it is larger than the sum of its proper divisors (11095904).

12681016 is a wasteful number, since it uses less digits than its factorization.

12681016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585133 (or 1585129 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12681016 is about 3561.0414207083. The cubic root of 12681016 is about 233.1943462525.

Adding to 12681016 its reverse (61018621), we get a palindrome (73699637).

The spelling of 12681016 in words is "twelve million, six hundred eighty-one thousand, sixteen".