720666348768 has 72 divisors (see below), whose sum is σ = 2056688380656. Its totient is φ = 239367206400.

The previous prime is 720666348767. The next prime is 720666348781. The reversal of 720666348768 is 867843666027.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720666348767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4371588 + ... + 4533443.

It is an arithmetic number, because the mean of its divisors is an integer number (28565116398).

Almost surely, 2^720666348768 is an apocalyptic number.

It is an amenable number.

720666348768 is an abundant number, since it is smaller than the sum of its proper divisors (1336022031888).

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

720666348768 is a wasteful number, since it uses less digits than its factorization.

720666348768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8905328 (or 8905317 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 63.

The spelling of 720666348768 in words is "seven hundred twenty billion, six hundred sixty-six million, three hundred forty-eight thousand, seven hundred sixty-eight".