13622609 has 32 divisors (see below), whose sum is σ = 18923520. Its totient is φ = 9460800.

The previous prime is 13622597. The next prime is 13622633. The reversal of 13622609 is 90622631.

It is a cyclic number.

It is not a de Polignac number, because 13622609 - 2¹⁶ = 13557073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13622669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30812 + ... + 31250.

It is an arithmetic number, because the mean of its divisors is an integer number (591360).

Almost surely, 2^13622609 is an apocalyptic number.

It is an amenable number.

13622609 is a deficient number, since it is larger than the sum of its proper divisors (5300911).

13622609 is a wasteful number, since it uses less digits than its factorization.

13622609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

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

The square root of 13622609 is about 3690.8818729404. The cubic root of 13622609 is about 238.8288370257.

The spelling of 13622609 in words is "thirteen million, six hundred twenty-two thousand, six hundred nine".