728608747703861 has 8 divisors (see below), whose sum is σ = 781427455333920. Its totient is φ = 677237127954192.

The previous prime is 728608747703831. The next prime is 728608747703869. The reversal of 728608747703861 is 168307747806827.

It is a happy number.

728608747703861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 728608747703861 - 2¹⁰ = 728608747702837 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 (728608747703869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361771969055 + ... + 361771971068.

It is an arithmetic number, because the mean of its divisors is an integer number (97678431916740).

Almost surely, 2^{728608747703861} is an apocalyptic number.

It is an amenable number.

728608747703861 is a deficient number, since it is larger than the sum of its proper divisors (52818707630059).

728608747703861 is a wasteful number, since it uses less digits than its factorization.

728608747703861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723543940195.

The product of its (nonzero) digits is 1062125568, while the sum is 74.

The spelling of 728608747703861 in words is "seven hundred twenty-eight trillion, six hundred eight billion, seven hundred forty-seven million, seven hundred three thousand, eight hundred sixty-one".