720580320 has 192 divisors, whose sum is σ = 2655072000. Its totient is φ = 182020608.

The previous prime is 720580261. The next prime is 720580379. The reversal of 720580320 is 23085027.

It is an interprime number because it is at equal distance from previous prime (720580261) and next prime (720580379).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 77691 + ... + 86469.

It is an arithmetic number, because the mean of its divisors is an integer number (13828500).

Almost surely, 2^720580320 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 720580320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327536000).

720580320 is an abundant number, since it is smaller than the sum of its proper divisors (1934491680).

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

720580320 is a wasteful number, since it uses less digits than its factorization.

720580320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8822 (or 8808 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 720580320 is about 26843.6271766690. The cubic root of 720580320 is about 896.5216854603.

The spelling of 720580320 in words is "seven hundred twenty million, five hundred eighty thousand, three hundred twenty".