16606004 has 6 divisors (see below), whose sum is σ = 29060514. Its totient is φ = 8303000.

The previous prime is 16606003. The next prime is 16606033. The reversal of 16606004 is 40060661.

It can be written as a sum of positive squares in only one way, i.e., 15288100 + 1317904 = 3910^2 + 1148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16606001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075747 + ... + 2075754.

It is an arithmetic number, because the mean of its divisors is an integer number (4843419).

Almost surely, 2^16606004 is an apocalyptic number.

It is an amenable number.

16606004 is a deficient number, since it is larger than the sum of its proper divisors (12454510).

16606004 is a wasteful number, since it uses less digits than its factorization.

16606004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151505 (or 4151503 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16606004 is about 4075.0465028021. The cubic root of 16606004 is about 255.1261915463.

Adding to 16606004 its reverse (40060661), we get a palindrome (56666665).

The spelling of 16606004 in words is "sixteen million, six hundred six thousand, four".