64303321 has 2 divisors, whose sum is σ = 64303322. Its totient is φ = 64303320.

The previous prime is 64303319. The next prime is 64303339. The reversal of 64303321 is 12330346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60840000 + 3463321 = 7800^2 + 1861^2 .

It is a cyclic number.

It is not a de Polignac number, because 64303321 - 2¹ = 64303319 is a prime.

Together with 64303319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 64303292 and 64303301.

It is not a weakly prime, because it can be changed into another prime (64303381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32151660 + 32151661.

It is an arithmetic number, because the mean of its divisors is an integer number (32151661).

Almost surely, 2^64303321 is an apocalyptic number.

It is an amenable number.

64303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

64303321 is an equidigital number, since it uses as much as digits as its factorization.

64303321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 64303321 is about 8018.9351537470. The cubic root of 64303321 is about 400.6309230670.

Adding to 64303321 its reverse (12330346), we get a palindrome (76633667).

The spelling of 64303321 in words is "sixty-four million, three hundred three thousand, three hundred twenty-one".