660755380884 has 24 divisors (see below), whose sum is σ = 1557027534048. Its totient is φ = 218071082400.

The previous prime is 660755380819. The next prime is 660755380889. The reversal of 660755380884 is 488083557066.

660755380884 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660755380889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272587642 + ... + 272590065.

It is an arithmetic number, because the mean of its divisors is an integer number (64876147252).

Almost surely, 2^660755380884 is an apocalyptic number.

It is an amenable number.

660755380884 is an abundant number, since it is smaller than the sum of its proper divisors (896272153164).

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

660755380884 is a wasteful number, since it uses less digits than its factorization.

660755380884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545177815 (or 545177813 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 660755380884 in words is "six hundred sixty billion, seven hundred fifty-five million, three hundred eighty thousand, eight hundred eighty-four".