13820609 has 8 divisors (see below), whose sum is σ = 15964128. Its totient is φ = 11824960.

The previous prime is 13820603. The next prime is 13820621. The reversal of 13820609 is 90602831.

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

It is a cyclic number.

It is not a de Polignac number, because 13820609 - 2⁴ = 13820593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13820603) 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 7 ways as a sum of consecutive naturals, for example, 36767 + ... + 37140.

It is an arithmetic number, because the mean of its divisors is an integer number (1995516).

Almost surely, 2^13820609 is an apocalyptic number.

It is an amenable number.

13820609 is a deficient number, since it is larger than the sum of its proper divisors (2143519).

13820609 is a wasteful number, since it uses less digits than its factorization.

13820609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73935.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13820609 is about 3717.6079674974. The cubic root of 13820609 is about 239.9803745526.

The spelling of 13820609 in words is "thirteen million, eight hundred twenty thousand, six hundred nine".