12868661 has 16 divisors (see below), whose sum is σ = 14601216. Its totient is φ = 11252736.

The previous prime is 12868657. The next prime is 12868697. The reversal of 12868661 is 16686821.

12868661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12868661 - 2² = 12868657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12868651) 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 15 ways as a sum of consecutive naturals, for example, 57596 + ... + 57818.

It is an arithmetic number, because the mean of its divisors is an integer number (912576).

Almost surely, 2^12868661 is an apocalyptic number.

It is an amenable number.

12868661 is a deficient number, since it is larger than the sum of its proper divisors (1732555).

12868661 is a wasteful number, since it uses less digits than its factorization.

12868661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its digits is 27648, while the sum is 38.

The square root of 12868661 is about 3587.2915967342. The cubic root of 12868661 is about 234.3389358673.

The spelling of 12868661 in words is "twelve million, eight hundred sixty-eight thousand, six hundred sixty-one".