720443680 has 192 divisors, whose sum is σ = 1992211200. Its totient is φ = 245329920.

The previous prime is 720443671. The next prime is 720443699. The reversal of 720443680 is 86344027.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 3620221 + ... + 3620419.

It is an arithmetic number, because the mean of its divisors is an integer number (10376100).

Almost surely, 2^720443680 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 720443680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996105600).

720443680 is an abundant number, since it is smaller than the sum of its proper divisors (1271767520).

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

720443680 is a wasteful number, since it uses less digits than its factorization.

720443680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 720443680 is about 26841.0819454060. The cubic root of 720443680 is about 896.4650142544.

The spelling of 720443680 in words is "seven hundred twenty million, four hundred forty-three thousand, six hundred eighty".