12622405 has 4 divisors (see below), whose sum is σ = 15146892. Its totient is φ = 10097920.

The previous prime is 12622387. The next prime is 12622417. The reversal of 12622405 is 50422621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7230721 + 5391684 = 2689^2 + 2322^2 .

It is not a de Polignac number, because 12622405 - 2⁵ = 12622373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262236 + ... + 1262245.

It is an arithmetic number, because the mean of its divisors is an integer number (3786723).

Almost surely, 2^12622405 is an apocalyptic number.

It is an amenable number.

12622405 is a deficient number, since it is larger than the sum of its proper divisors (2524487).

12622405 is an equidigital number, since it uses as much as digits as its factorization.

12622405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524486.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12622405 is about 3552.8024149958. The cubic root of 12622405 is about 232.8345205813.

The spelling of 12622405 in words is "twelve million, six hundred twenty-two thousand, four hundred five".