720987713280 has 720 divisors, whose sum is σ = 2646792197280. Its totient is φ = 187326038016.

The previous prime is 720987713197. The next prime is 720987713317. The reversal of 720987713280 is 82317789027.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 983611794 + ... + 983612526.

It is an arithmetic number, because the mean of its divisors is an integer number (3676100274).

Almost surely, 2^720987713280 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 720987713280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323396098640).

720987713280 is an abundant number, since it is smaller than the sum of its proper divisors (1925804484000).

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

720987713280 is a wasteful number, since it uses less digits than its factorization.

720987713280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 720987713280 in words is "seven hundred twenty billion, nine hundred eighty-seven million, seven hundred thirteen thousand, two hundred eighty".