65000321 has 2 divisors, whose sum is σ = 65000322. Its totient is φ = 65000320.

The previous prime is 65000303. The next prime is 65000357. The reversal of 65000321 is 12300056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63425296 + 1575025 = 7964^2 + 1255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65000321 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65000321.

It is not a weakly prime, because it can be changed into another prime (65000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32500160 + 32500161.

It is an arithmetic number, because the mean of its divisors is an integer number (32500161).

Almost surely, 2^65000321 is an apocalyptic number.

It is an amenable number.

65000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

65000321 is an equidigital number, since it uses as much as digits as its factorization.

65000321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 65000321 is about 8062.2776558489. The cubic root of 65000321 is about 402.0732377311.

Adding to 65000321 its reverse (12300056), we get a palindrome (77300377).

The spelling of 65000321 in words is "sixty-five million, three hundred twenty-one", and thus it is an aban number.