328751669 has 2 divisors, whose sum is σ = 328751670. Its totient is φ = 328751668.

The previous prime is 328751611. The next prime is 328751693. The reversal of 328751669 is 966157823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306075025 + 22676644 = 17495^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 328751669 - 2⁸ = 328751413 is a prime.

It is a super-2 number, since 2×328751669² = 216155319740571122, 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 (328751069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164375834 + 164375835.

It is an arithmetic number, because the mean of its divisors is an integer number (164375835).

Almost surely, 2^328751669 is an apocalyptic number.

It is an amenable number.

328751669 is a deficient number, since it is larger than the sum of its proper divisors (1).

328751669 is an equidigital number, since it uses as much as digits as its factorization.

328751669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 328751669 is about 18131.5103893746. The cubic root of 328751669 is about 690.1698587632.

The spelling of 328751669 in words is "three hundred twenty-eight million, seven hundred fifty-one thousand, six hundred sixty-nine".