16604037 has 12 divisors (see below), whose sum is σ = 24811020. Its totient is φ = 10687488.

The previous prime is 16604033. The next prime is 16604051. The reversal of 16604037 is 73040661.

It can be written as a sum of positive squares in 2 ways, for example, as 9036036 + 7568001 = 3006^2 + 2751^2 .

It is not a de Polignac number, because 16604037 - 2² = 16604033 is a prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 16604037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31548 + ... + 32069.

It is an arithmetic number, because the mean of its divisors is an integer number (2067585).

Almost surely, 2^16604037 is an apocalyptic number.

It is an amenable number.

16604037 is a deficient number, since it is larger than the sum of its proper divisors (8206983).

16604037 is a wasteful number, since it uses less digits than its factorization.

16604037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63652 (or 63649 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 16604037 is about 4074.8051487157. The cubic root of 16604037 is about 255.1161178197.

Adding to 16604037 its reverse (73040661), we get a palindrome (89644698).

The spelling of 16604037 in words is "sixteen million, six hundred four thousand, thirty-seven".