720217960 has 64 divisors (see below), whose sum is σ = 2020360320. Its totient is φ = 224482560.

The previous prime is 720217951. The next prime is 720217961. The reversal of 720217960 is 69712027.

It is not an unprimeable number, because it can be changed into a prime (720217961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113839 + ... + 119998.

It is an arithmetic number, because the mean of its divisors is an integer number (31568130).

Almost surely, 2^720217960 is an apocalyptic number.

720217960 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

720217960 is an abundant number, since it is smaller than the sum of its proper divisors (1300142360).

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

720217960 is a wasteful number, since it uses less digits than its factorization.

720217960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233866 (or 233862 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 720217960 is about 26836.8768674747. The cubic root of 720217960 is about 896.3713815737.

Adding to 720217960 its reverse (69712027), we get a palindrome (789929987).

The spelling of 720217960 in words is "seven hundred twenty million, two hundred seventeen thousand, nine hundred sixty".