13620923 has 4 divisors (see below), whose sum is σ = 14090640. Its totient is φ = 13151208.

The previous prime is 13620889. The next prime is 13620931. The reversal of 13620923 is 32902631.

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

It is a cyclic number.

It is not a de Polignac number, because 13620923 - 2⁸ = 13620667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13620892 and 13620901.

It is not an unprimeable number, because it can be changed into a prime (13620023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234815 + ... + 234872.

It is an arithmetic number, because the mean of its divisors is an integer number (3522660).

Almost surely, 2^13620923 is an apocalyptic number.

13620923 is a deficient number, since it is larger than the sum of its proper divisors (469717).

13620923 is an equidigital number, since it uses as much as digits as its factorization.

13620923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469716.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 13620923 is about 3690.6534651739. The cubic root of 13620923 is about 238.8189837484.

The spelling of 13620923 in words is "thirteen million, six hundred twenty thousand, nine hundred twenty-three".