12906623 has 4 divisors (see below), whose sum is σ = 13181280. Its totient is φ = 12631968.

The previous prime is 12906589. The next prime is 12906667. The reversal of 12906623 is 32660921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32660921 = 2417 ⋅13513.

It is a cyclic number.

It is not a de Polignac number, because 12906623 - 2⁶ = 12906559 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 (12906823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137258 + ... + 137351.

It is an arithmetic number, because the mean of its divisors is an integer number (3295320).

Almost surely, 2^12906623 is an apocalyptic number.

12906623 is a deficient number, since it is larger than the sum of its proper divisors (274657).

12906623 is an equidigital number, since it uses as much as digits as its factorization.

12906623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274656.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 12906623 is about 3592.5788787443. The cubic root of 12906623 is about 234.5691396004.

The spelling of 12906623 in words is "twelve million, nine hundred six thousand, six hundred twenty-three".