646830323 has 2 divisors, whose sum is σ = 646830324. Its totient is φ = 646830322.

The previous prime is 646830269. The next prime is 646830329. The reversal of 646830323 is 323038646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646830323 - 2¹⁴ = 646813939 is a prime.

It is not a weakly prime, because it can be changed into another prime (646830329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323415161 + 323415162.

It is an arithmetic number, because the mean of its divisors is an integer number (323415162).

Almost surely, 2^646830323 is an apocalyptic number.

646830323 is a deficient number, since it is larger than the sum of its proper divisors (1).

646830323 is an equidigital number, since it uses as much as digits as its factorization.

646830323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 646830323 is about 25432.8591196507. The cubic root of 646830323 is about 864.8287600261.

Adding to 646830323 its reverse (323038646), we get a palindrome (969868969).

The spelling of 646830323 in words is "six hundred forty-six million, eight hundred thirty thousand, three hundred twenty-three".