14207621 has 2 divisors, whose sum is σ = 14207622. Its totient is φ = 14207620.

The previous prime is 14207581. The next prime is 14207639. The reversal of 14207621 is 12670241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14145121 + 62500 = 3761^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 14207621 - 2²² = 10013317 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14207521) 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 as a sum of consecutive naturals, namely, 7103810 + 7103811.

It is an arithmetic number, because the mean of its divisors is an integer number (7103811).

Almost surely, 2^14207621 is an apocalyptic number.

It is an amenable number.

14207621 is a deficient number, since it is larger than the sum of its proper divisors (1).

14207621 is an equidigital number, since it uses as much as digits as its factorization.

14207621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 14207621 is about 3769.2998023506. The cubic root of 14207621 is about 242.1998042531.

Adding to 14207621 its reverse (12670241), we get a palindrome (26877862).

The spelling of 14207621 in words is "fourteen million, two hundred seven thousand, six hundred twenty-one".