327109661 has 2 divisors, whose sum is σ = 327109662. Its totient is φ = 327109660.

The previous prime is 327109591. The next prime is 327109667. The reversal of 327109661 is 166901723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327067225 + 42436 = 18085^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 327109661 - 2¹⁰ = 327108637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327109667) 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, 163554830 + 163554831.

It is an arithmetic number, because the mean of its divisors is an integer number (163554831).

Almost surely, 2^327109661 is an apocalyptic number.

It is an amenable number.

327109661 is a deficient number, since it is larger than the sum of its proper divisors (1).

327109661 is an equidigital number, since it uses as much as digits as its factorization.

327109661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 327109661 is about 18086.1731994361. The cubic root of 327109661 is about 689.0188821526.

The spelling of 327109661 in words is "three hundred twenty-seven million, one hundred nine thousand, six hundred sixty-one".