720942880320 has 896 divisors, whose sum is σ = 2797467079680. Its totient is φ = 173717913600.

The previous prime is 720942880297. The next prime is 720942880321. The reversal of 720942880320 is 23088249027.

720942880320 is a `hidden beast` number, since 7 + 209 + 42 + 8 + 80 + 320 = 666.

720942880320 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 (45).

It is not an unprimeable number, because it can be changed into a prime (720942880321) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1168464652 + ... + 1168465268.

It is an arithmetic number, because the mean of its divisors is an integer number (3122173080).

Almost surely, 2^720942880320 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 720942880320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1398733539840).

720942880320 is an abundant number, since it is smaller than the sum of its proper divisors (2076524199360).

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

720942880320 is a wasteful number, since it uses less digits than its factorization.

720942880320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 720942880320 in words is "seven hundred twenty billion, nine hundred forty-two million, eight hundred eighty thousand, three hundred twenty".