1660044 has 12 divisors (see below), whose sum is σ = 3873464. Its totient is φ = 553344.

The previous prime is 1660039. The next prime is 1660063. The reversal of 1660044 is 4400661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1660044.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69157 + ... + 69180.

2^1660044 is an apocalyptic number.

It is an amenable number.

1660044 is an abundant number, since it is smaller than the sum of its proper divisors (2213420).

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

1660044 is a wasteful number, since it uses less digits than its factorization.

1660044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138344 (or 138342 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1660044 is about 1288.4269478709. The cubic root of 1660044 is about 118.4058608920.

The spelling of 1660044 in words is "one million, six hundred sixty thousand, forty-four".