660520680750 has 96 divisors (see below), whose sum is σ = 2041197672384. Its totient is φ = 150976152000.

The previous prime is 660520680697. The next prime is 660520680793. The reversal of 660520680750 is 57086025066.

660520680750 is a `hidden beast` number, since 6 + 60 + 520 + 68 + 0 + 7 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 660520680696 and 660520680705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20953161 + ... + 20984660.

It is an arithmetic number, because the mean of its divisors is an integer number (21262475754).

Almost surely, 2^660520680750 is an apocalyptic number.

660520680750 is an abundant number, since it is smaller than the sum of its proper divisors (1380676991634).

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

660520680750 is a wasteful number, since it uses less digits than its factorization.

660520680750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41937851 (or 41937838 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 660520680750 in words is "six hundred sixty billion, five hundred twenty million, six hundred eighty thousand, seven hundred fifty".