660232725984 has 72 divisors (see below), whose sum is σ = 2021962734792. Its totient is φ = 203148529920.

The previous prime is 660232725947. The next prime is 660232725989. The reversal of 660232725984 is 489527232066.

660232725984 is a `hidden beast` number, since 6 + 6 + 0 + 23 + 27 + 2 + 598 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 660232725984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660232725989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88168362 + ... + 88175849.

It is an arithmetic number, because the mean of its divisors is an integer number (28082815761).

Almost surely, 2^660232725984 is an apocalyptic number.

It is an amenable number.

660232725984 is an abundant number, since it is smaller than the sum of its proper divisors (1361730008808).

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

660232725984 is a wasteful number, since it uses less digits than its factorization.

660232725984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176344240 (or 176344229 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 660232725984 in words is "six hundred sixty billion, two hundred thirty-two million, seven hundred twenty-five thousand, nine hundred eighty-four".