11666329 has 2 divisors, whose sum is σ = 11666330. Its totient is φ = 11666328.

The previous prime is 11666327. The next prime is 11666339. The reversal of 11666329 is 92366611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8690704 + 2975625 = 2948^2 + 1725^2 .

It is an emirp because it is prime and its reverse (92366611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11666329 - 2¹ = 11666327 is a prime.

It is a super-2 number, since 2×11666329² = 272206464672482, which contains 22 as substring.

Together with 11666327, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11666294 and 11666303.

It is not a weakly prime, because it can be changed into another prime (11666327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833164 + 5833165.

It is an arithmetic number, because the mean of its divisors is an integer number (5833165).

Almost surely, 2^11666329 is an apocalyptic number.

It is an amenable number.

11666329 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666329 is an equidigital number, since it uses as much as digits as its factorization.

11666329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 11666329 is about 3415.6008256235. The cubic root of 11666329 is about 226.8008824010.

The spelling of 11666329 in words is "eleven million, six hundred sixty-six thousand, three hundred twenty-nine".