16604033 has 2 divisors, whose sum is σ = 16604034. Its totient is φ = 16604032.

The previous prime is 16604023. The next prime is 16604051. The reversal of 16604033 is 33040661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15547249 + 1056784 = 3943^2 + 1028^2 .

It is an emirp because it is prime and its reverse (33040661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16604033 - 2⁶ = 16603969 is a prime.

It is not a weakly prime, because it can be changed into another prime (16604023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8302016 + 8302017.

It is an arithmetic number, because the mean of its divisors is an integer number (8302017).

Almost surely, 2^16604033 is an apocalyptic number.

It is an amenable number.

16604033 is a deficient number, since it is larger than the sum of its proper divisors (1).

16604033 is an equidigital number, since it uses as much as digits as its factorization.

16604033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 16604033 is about 4074.8046578947. The cubic root of 16604033 is about 255.1160973334.

Adding to 16604033 its reverse (33040661), we get a palindrome (49644694).

The spelling of 16604033 in words is "sixteen million, six hundred four thousand, thirty-three".