12868665 has 16 divisors (see below), whose sum is σ = 20979648. Its totient is φ = 6733376.

The previous prime is 12868657. The next prime is 12868697. The reversal of 12868665 is 56686821.

12868665 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 12868665 - 2³ = 12868657 is a prime.

It is an unprimeable number.

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, 7299 + ... + 8888.

It is an arithmetic number, because the mean of its divisors is an integer number (1311228).

Almost surely, 2^12868665 is an apocalyptic number.

12868665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12868665 is a deficient number, since it is larger than the sum of its proper divisors (8110983).

12868665 is a wasteful number, since it uses less digits than its factorization.

12868665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16248.

The product of its digits is 138240, while the sum is 42.

The square root of 12868665 is about 3587.2921542579. The cubic root of 12868665 is about 234.3389601473.

The spelling of 12868665 in words is "twelve million, eight hundred sixty-eight thousand, six hundred sixty-five".