16660544 has 28 divisors (see below), whose sum is σ = 35007804. Its totient is φ = 7839744.

The previous prime is 16660543. The next prime is 16660577. The reversal of 16660544 is 44506661.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 12166144 = 2120^2 + 3488^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 16660544.

It is not an unprimeable number, because it can be changed into a prime (16660543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6569 + ... + 8744.

Almost surely, 2^16660544 is an apocalyptic number.

It is an amenable number.

16660544 is an abundant number, since it is smaller than the sum of its proper divisors (18347260).

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

16660544 is a wasteful number, since it uses less digits than its factorization.

16660544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15342 (or 15332 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 16660544 is about 4081.7329652980. The cubic root of 16660544 is about 255.4051945854.

The spelling of 16660544 in words is "sixteen million, six hundred sixty thousand, five hundred forty-four".