720566760 has 128 divisors (see below), whose sum is σ = 2297030400. Its totient is φ = 180203520.

The previous prime is 720566723. The next prime is 720566771. The reversal of 720566760 is 67665027.

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, 858421 + ... + 859259.

It is an arithmetic number, because the mean of its divisors is an integer number (17945550).

Almost surely, 2^720566760 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 720566760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148515200).

720566760 is an abundant number, since it is smaller than the sum of its proper divisors (1576463640).

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

720566760 is a wasteful number, since it uses less digits than its factorization.

720566760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 720566760 is about 26843.3746015660. The cubic root of 720566760 is about 896.5160617937.

The spelling of 720566760 in words is "seven hundred twenty million, five hundred sixty-six thousand, seven hundred sixty".