328497643 has 2 divisors, whose sum is σ = 328497644. Its totient is φ = 328497642.

The previous prime is 328497623. The next prime is 328497709. The reversal of 328497643 is 346794823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328497643 - 2¹³ = 328489451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328497593 and 328497602.

It is not a weakly prime, because it can be changed into another prime (328497623) 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, 164248821 + 164248822.

It is an arithmetic number, because the mean of its divisors is an integer number (164248822).

Almost surely, 2^328497643 is an apocalyptic number.

328497643 is a deficient number, since it is larger than the sum of its proper divisors (1).

328497643 is an equidigital number, since it uses as much as digits as its factorization.

328497643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The square root of 328497643 is about 18124.5039380392. The cubic root of 328497643 is about 689.9920484976.

The spelling of 328497643 in words is "three hundred twenty-eight million, four hundred ninety-seven thousand, six hundred forty-three".