322020649 has 2 divisors, whose sum is σ = 322020650. Its totient is φ = 322020648.

The previous prime is 322020617. The next prime is 322020703. The reversal of 322020649 is 946020223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274134249 + 47886400 = 16557^2 + 6920^2 .

It is a cyclic number.

It is not a de Polignac number, because 322020649 - 2⁵ = 322020617 is a prime.

It is not a weakly prime, because it can be changed into another prime (322020449) 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, 161010324 + 161010325.

It is an arithmetic number, because the mean of its divisors is an integer number (161010325).

Almost surely, 2^322020649 is an apocalyptic number.

It is an amenable number.

322020649 is a deficient number, since it is larger than the sum of its proper divisors (1).

322020649 is an equidigital number, since it uses as much as digits as its factorization.

322020649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 322020649 is about 17944.9337975931. The cubic root of 322020649 is about 685.4270510923.

The spelling of 322020649 in words is "three hundred twenty-two million, twenty thousand, six hundred forty-nine".