328768889 has 2 divisors, whose sum is σ = 328768890. Its totient is φ = 328768888.

The previous prime is 328768879. The next prime is 328768907. The reversal of 328768889 is 988867823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285103225 + 43665664 = 16885^2 + 6608^2 .

It is a cyclic number.

It is not a de Polignac number, because 328768889 - 2⁸ = 328768633 is a prime.

It is not a weakly prime, because it can be changed into another prime (328768879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164384444 + 164384445.

It is an arithmetic number, because the mean of its divisors is an integer number (164384445).

Almost surely, 2^328768889 is an apocalyptic number.

It is an amenable number.

328768889 is a deficient number, since it is larger than the sum of its proper divisors (1).

328768889 is an equidigital number, since it uses as much as digits as its factorization.

328768889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 59.

The square root of 328768889 is about 18131.9852470710. The cubic root of 328768889 is about 690.1819089098.

The spelling of 328768889 in words is "three hundred twenty-eight million, seven hundred sixty-eight thousand, eight hundred eighty-nine".