12866645 has 8 divisors (see below), whose sum is σ = 16843680. Its totient is φ = 9357520.

The previous prime is 12866627. The next prime is 12866647. The reversal of 12866645 is 54666821.

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

It is not a de Polignac number, because 12866645 - 2⁸ = 12866389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12866599 and 12866608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116915 + ... + 117024.

It is an arithmetic number, because the mean of its divisors is an integer number (2105460).

Almost surely, 2^12866645 is an apocalyptic number.

It is an amenable number.

12866645 is a deficient number, since it is larger than the sum of its proper divisors (3977035).

12866645 is a wasteful number, since it uses less digits than its factorization.

12866645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233955.

The product of its digits is 69120, while the sum is 38.

The square root of 12866645 is about 3587.0105937953. The cubic root of 12866645 is about 234.3266980759.

The spelling of 12866645 in words is "twelve million, eight hundred sixty-six thousand, six hundred forty-five".