16604541 has 8 divisors (see below), whose sum is σ = 24599360. Its totient is φ = 11069676.

The previous prime is 16604531. The next prime is 16604573. The reversal of 16604541 is 14540661.

16604541 is a `hidden beast` number, since 1 + 6 + 604 + 54 + 1 = 666.

It is not a de Polignac number, because 16604541 - 2⁵ = 16604509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 614983 = 16604541 / (1 + 6 + 6 + 0 + 4 + 5 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307465 + ... + 307518.

It is an arithmetic number, because the mean of its divisors is an integer number (3074920).

Almost surely, 2^16604541 is an apocalyptic number.

It is an amenable number.

16604541 is a deficient number, since it is larger than the sum of its proper divisors (7994819).

16604541 is an equidigital number, since it uses as much as digits as its factorization.

16604541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614992 (or 614986 counting only the distinct ones).

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

The square root of 16604541 is about 4074.8669916943. The cubic root of 16604541 is about 255.1186990639.

The spelling of 16604541 in words is "sixteen million, six hundred four thousand, five hundred forty-one".