16645104 has 120 divisors (see below), whose sum is σ = 54485600. Its totient is φ = 4741632.

The previous prime is 16645087. The next prime is 16645129. The reversal of 16645104 is 40154661.

16645104 is a `hidden beast` number, since 1 + 6 + 645 + 10 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49224 + ... + 49560.

Almost surely, 2^16645104 is an apocalyptic number.

16645104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16645104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27242800).

16645104 is an abundant number, since it is smaller than the sum of its proper divisors (37840496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16645104 is a wasteful number, since it uses less digits than its factorization.

16645104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16645104 is about 4079.8411733792. The cubic root of 16645104 is about 255.3262720920.

Adding to 16645104 its reverse (40154661), we get a palindrome (56799765).

The spelling of 16645104 in words is "sixteen million, six hundred forty-five thousand, one hundred four".