328805669 has 2 divisors, whose sum is σ = 328805670. Its totient is φ = 328805668.

The previous prime is 328805657. The next prime is 328805707. The reversal of 328805669 is 966508823.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327972100 + 833569 = 18110^2 + 913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328805669 is a prime.

It is a super-2 number, since 2×328805669² = 216226335933075122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328805969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164402834 + 164402835.

It is an arithmetic number, because the mean of its divisors is an integer number (164402835).

Almost surely, 2^328805669 is an apocalyptic number.

It is an amenable number.

328805669 is a deficient number, since it is larger than the sum of its proper divisors (1).

328805669 is an equidigital number, since it uses as much as digits as its factorization.

328805669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 328805669 is about 18132.9994485193. Note that the first 3 decimals coincide. The cubic root of 328805669 is about 690.2076452704.

The spelling of 328805669 in words is "three hundred twenty-eight million, eight hundred five thousand, six hundred sixty-nine".