16604111 has 4 divisors (see below), whose sum is σ = 16714224. Its totient is φ = 16494000.

The previous prime is 16604101. The next prime is 16604117. The reversal of 16604111 is 11140661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16604111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54830 + ... + 55131.

It is an arithmetic number, because the mean of its divisors is an integer number (4178556).

Almost surely, 2^16604111 is an apocalyptic number.

16604111 is a deficient number, since it is larger than the sum of its proper divisors (110113).

16604111 is a wasteful number, since it uses less digits than its factorization.

16604111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110112.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 16604111 is about 4074.8142288944. The cubic root of 16604111 is about 255.1164968152.

Adding to 16604111 its reverse (11140661), we get a palindrome (27744772).

The spelling of 16604111 in words is "sixteen million, six hundred four thousand, one hundred eleven".