4643321 has 2 divisors, whose sum is σ = 4643322. Its totient is φ = 4643320.

The previous prime is 4643299. The next prime is 4643323. The reversal of 4643321 is 1233464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3759721 + 883600 = 1939^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 4643321 - 2⁶ = 4643257 is a prime.

It is a Sophie Germain prime.

Together with 4643323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4643323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321660 + 2321661.

It is an arithmetic number, because the mean of its divisors is an integer number (2321661).

Almost surely, 2^4643321 is an apocalyptic number.

It is an amenable number.

4643321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4643321 is an equidigital number, since it uses as much as digits as its factorization.

4643321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 4643321 is about 2154.8366527419. The cubic root of 4643321 is about 166.8308014168.

Adding to 4643321 its reverse (1233464), we get a palindrome (5876785).

The spelling of 4643321 in words is "four million, six hundred forty-three thousand, three hundred twenty-one".