328688623 has 2 divisors, whose sum is σ = 328688624. Its totient is φ = 328688622.

The previous prime is 328688617. The next prime is 328688641. The reversal of 328688623 is 326886823.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328688623 is a prime.

It is a super-2 number, since 2×328688623² = 216072421779272258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328688663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164344311 + 164344312.

It is an arithmetic number, because the mean of its divisors is an integer number (164344312).

Almost surely, 2^328688623 is an apocalyptic number.

328688623 is a deficient number, since it is larger than the sum of its proper divisors (1).

328688623 is an equidigital number, since it uses as much as digits as its factorization.

328688623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 46.

The square root of 328688623 is about 18129.7717304990. The cubic root of 328688623 is about 690.1257370802.

The spelling of 328688623 in words is "three hundred twenty-eight million, six hundred eighty-eight thousand, six hundred twenty-three".