660104556 has 24 divisors (see below), whose sum is σ = 1541023344. Its totient is φ = 219923520.

The previous prime is 660104539. The next prime is 660104581. The reversal of 660104556 is 655401066.

660104556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12846 + ... + 38538.

It is an arithmetic number, because the mean of its divisors is an integer number (64209306).

Almost surely, 2^660104556 is an apocalyptic number.

It is a pronic number, being equal to 25692×25693.

It is an amenable number.

660104556 is an abundant number, since it is smaller than the sum of its proper divisors (880918788).

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

660104556 is a wasteful number, since it uses less digits than its factorization.

660104556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27841 (or 27839 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 660104556 is about 25692.4999951348. The cubic root of 660104556 is about 870.7047427495.

The spelling of 660104556 in words is "six hundred sixty million, one hundred four thousand, five hundred fifty-six".