646383326 has 16 divisors (see below), whose sum is σ = 981648720. Its totient is φ = 319176000.

The previous prime is 646383319. The next prime is 646383341. The reversal of 646383326 is 623383646.

It is a happy number.

646383326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×646383326² = 835622808261644552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197201 + ... + 200451.

It is an arithmetic number, because the mean of its divisors is an integer number (61353045).

Almost surely, 2^646383326 is an apocalyptic number.

646383326 is a deficient number, since it is larger than the sum of its proper divisors (335265394).

646383326 is a wasteful number, since it uses less digits than its factorization.

646383326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459.

The product of its digits is 373248, while the sum is 41.

The square root of 646383326 is about 25424.0698158261. The cubic root of 646383326 is about 864.6294986276.

The spelling of 646383326 in words is "six hundred forty-six million, three hundred eighty-three thousand, three hundred twenty-six".