12606621 has 16 divisors (see below), whose sum is σ = 17164224. Its totient is φ = 8228864.

The previous prime is 12606593. The next prime is 12606623. The reversal of 12606621 is 12660621.

12606621 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 12606621 - 2¹⁰ = 12605597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12606591 and 12606600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12606623) 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, 48925 + ... + 49181.

It is an arithmetic number, because the mean of its divisors is an integer number (1072764).

Almost surely, 2^12606621 is an apocalyptic number.

It is an amenable number.

12606621 is a deficient number, since it is larger than the sum of its proper divisors (4557603).

12606621 is a wasteful number, since it uses less digits than its factorization.

12606621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12606621 is about 3550.5803750936. The cubic root of 12606621 is about 232.7374288624.

The spelling of 12606621 in words is "twelve million, six hundred six thousand, six hundred twenty-one".