720644680103 has 16 divisors (see below), whose sum is σ = 731360581056. Its totient is φ = 710003097600.

The previous prime is 720644680099. The next prime is 720644680121. The reversal of 720644680103 is 301086446027.

It is a cyclic number.

It is not a de Polignac number, because 720644680103 - 2² = 720644680099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720644680193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19546775 + ... + 19583607.

It is an arithmetic number, because the mean of its divisors is an integer number (45710036316).

Almost surely, 2^720644680103 is an apocalyptic number.

720644680103 is a deficient number, since it is larger than the sum of its proper divisors (10715900953).

720644680103 is a wasteful number, since it uses less digits than its factorization.

720644680103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37834.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 720644680103 in words is "seven hundred twenty billion, six hundred forty-four million, six hundred eighty thousand, one hundred three".