660386310036740 has 96 divisors (see below), whose sum is σ = 1668407522745600. Its totient is φ = 214493297356800.

The previous prime is 660386310036671. The next prime is 660386310036749. The reversal of 660386310036740 is 47630013683066.

It is a happy number.

It is a super-2 number, since 2×660386310036740² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (660386310036749) 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 31 ways as a sum of consecutive naturals, for example, 65774540 + ... + 75146940.

It is an arithmetic number, because the mean of its divisors is an integer number (17379245028600).

Almost surely, 2^{660386310036740} is an apocalyptic number.

It is an amenable number.

660386310036740 is an abundant number, since it is smaller than the sum of its proper divisors (1008021212708860).

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

660386310036740 is a wasteful number, since it uses less digits than its factorization.

660386310036740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398925 (or 9398923 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 660386310036740 in words is "six hundred sixty trillion, three hundred eighty-six billion, three hundred ten million, thirty-six thousand, seven hundred forty".