14218621 has 2 divisors, whose sum is σ = 14218622. Its totient is φ = 14218620.

The previous prime is 14218601. The next prime is 14218627. The reversal of 14218621 is 12681241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13586596 + 632025 = 3686^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 14218621 - 2⁷ = 14218493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14218627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7109310 + 7109311.

It is an arithmetic number, because the mean of its divisors is an integer number (7109311).

Almost surely, 2^14218621 is an apocalyptic number.

It is an amenable number.

14218621 is a deficient number, since it is larger than the sum of its proper divisors (1).

14218621 is an equidigital number, since it uses as much as digits as its factorization.

14218621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 25.

The square root of 14218621 is about 3770.7586769774. The cubic root of 14218621 is about 242.2622944376.

Adding to 14218621 its reverse (12681241), we get a palindrome (26899862).

The spelling of 14218621 in words is "fourteen million, two hundred eighteen thousand, six hundred twenty-one".