720557200 has 120 divisors (see below), whose sum is σ = 1953982080. Its totient is φ = 252940800.

The previous prime is 720557099. The next prime is 720557209. The reversal of 720557200 is 2755027.

It is not an unprimeable number, because it can be changed into a prime (720557209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124777 + ... + 130423.

It is an arithmetic number, because the mean of its divisors is an integer number (16283184).

Almost surely, 2^720557200 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 720557200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976991040).

720557200 is an abundant number, since it is smaller than the sum of its proper divisors (1233424880).

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

720557200 is a wasteful number, since it uses less digits than its factorization.

720557200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705 (or 5694 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 720557200 is about 26843.1965309648. The cubic root of 720557200 is about 896.5120969835.

The spelling of 720557200 in words is "seven hundred twenty million, five hundred fifty-seven thousand, two hundred".