1329660689 has 8 divisors (see below), whose sum is σ = 1525527168. Its totient is φ = 1135272960.

The previous prime is 1329660667. The next prime is 1329660707. The reversal of 1329660689 is 9860669231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1329660689 - 2¹² = 1329656593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1329660989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367757 + ... + 371354.

It is an arithmetic number, because the mean of its divisors is an integer number (190690896).

Almost surely, 2^1329660689 is an apocalyptic number.

It is an amenable number.

1329660689 is a deficient number, since it is larger than the sum of its proper divisors (195866479).

1329660689 is an equidigital number, since it uses as much as digits as its factorization.

1329660689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739375.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 1329660689 is about 36464.5127349866. The cubic root of 1329660689 is about 1099.6309199791.

The spelling of 1329660689 in words is "one billion, three hundred twenty-nine million, six hundred sixty thousand, six hundred eighty-nine".