6214321 has 2 divisors, whose sum is σ = 6214322. Its totient is φ = 6214320.

The previous prime is 6214319. The next prime is 6214331. The reversal of 6214321 is 1234126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5574321 + 640000 = 2361^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 6214321 - 2¹ = 6214319 is a prime.

Together with 6214319, it forms a pair of twin primes.

6214321 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6214331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3107160 + 3107161.

It is an arithmetic number, because the mean of its divisors is an integer number (3107161).

Almost surely, 2^6214321 is an apocalyptic number.

It is an amenable number.

6214321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6214321 is an equidigital number, since it uses as much as digits as its factorization.

6214321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 6214321 is about 2492.8539868994. The cubic root of 6214321 is about 183.8503923306.

Adding to 6214321 its reverse (1234126), we get a palindrome (7448447).

The spelling of 6214321 in words is "six million, two hundred fourteen thousand, three hundred twenty-one".