13620223 has 2 divisors, whose sum is σ = 13620224. Its totient is φ = 13620222.

The previous prime is 13620199. The next prime is 13620287. The reversal of 13620223 is 32202631.

It is a weak prime.

It is an emirp because it is prime and its reverse (32202631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13620223 - 2¹³ = 13612031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13620223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13620023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810111 + 6810112.

It is an arithmetic number, because the mean of its divisors is an integer number (6810112).

Almost surely, 2^13620223 is an apocalyptic number.

13620223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620223 is an equidigital number, since it uses as much as digits as its factorization.

13620223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13620223 is about 3690.5586298012. The cubic root of 13620223 is about 238.8148925877.

Adding to 13620223 its reverse (32202631), we get a palindrome (45822854).

The spelling of 13620223 in words is "thirteen million, six hundred twenty thousand, two hundred twenty-three".