8650321 has 2 divisors, whose sum is σ = 8650322. Its totient is φ = 8650320.

The previous prime is 8650319. The next prime is 8650361. The reversal of 8650321 is 1230568.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8473921 + 176400 = 2911^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 8650321 - 2¹ = 8650319 is a prime.

Together with 8650319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8650361) 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, 4325160 + 4325161.

It is an arithmetic number, because the mean of its divisors is an integer number (4325161).

Almost surely, 2^8650321 is an apocalyptic number.

It is an amenable number.

8650321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8650321 is an equidigital number, since it uses as much as digits as its factorization.

8650321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 8650321 is about 2941.1428051014. The cubic root of 8650321 is about 205.2787878556.

Adding to 8650321 its reverse (1230568), we get a palindrome (9880889).

The spelling of 8650321 in words is "eight million, six hundred fifty thousand, three hundred twenty-one".