660870016 has 32 divisors (see below), whose sum is σ = 1322287200. Its totient is φ = 329001984.

The previous prime is 660870013. The next prime is 660870029. The reversal of 660870016 is 610078066.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660870013) 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, 18745 + ... + 40903.

It is an arithmetic number, because the mean of its divisors is an integer number (41321475).

Almost surely, 2^660870016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660870016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661143600).

660870016 is an abundant number, since it is smaller than the sum of its proper divisors (661417184).

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

660870016 is a wasteful number, since it uses less digits than its factorization.

660870016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22406 (or 22394 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 660870016 is about 25707.3922442553. The cubic root of 660870016 is about 871.0411703607.

The spelling of 660870016 in words is "six hundred sixty million, eight hundred seventy thousand, sixteen".