660784496000 has 256 divisors, whose sum is σ = 1677802014720. Its totient is φ = 258718720000.

The previous prime is 660784495967. The next prime is 660784496017. The reversal of 660784496000 is 694487066.

660784496000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 660784496000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574095425 + ... + 574096575.

It is an arithmetic number, because the mean of its divisors is an integer number (6553914120).

Almost surely, 2^660784496000 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 660784496000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838901007360).

660784496000 is an abundant number, since it is smaller than the sum of its proper divisors (1017017518720).

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

660784496000 is a wasteful number, since it uses less digits than its factorization.

660784496000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1888 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 660784496000 in words is "six hundred sixty billion, seven hundred eighty-four million, four hundred ninety-six thousand".