728606673785 has 16 divisors (see below), whose sum is σ = 945456074496. Its totient is φ = 536925666048.

The previous prime is 728606673779. The next prime is 728606673811. The reversal of 728606673785 is 587376606827.

It is a cyclic number.

It is not a de Polignac number, because 728606673785 - 2¹² = 728606669689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91185827 + ... + 91193816.

It is an arithmetic number, because the mean of its divisors is an integer number (59091004656).

Almost surely, 2^728606673785 is an apocalyptic number.

It is an amenable number.

728606673785 is a deficient number, since it is larger than the sum of its proper divisors (216849400711).

728606673785 is a wasteful number, since it uses less digits than its factorization.

728606673785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182379712.

The product of its (nonzero) digits is 142248960, while the sum is 65.

The spelling of 728606673785 in words is "seven hundred twenty-eight billion, six hundred six million, six hundred seventy-three thousand, seven hundred eighty-five".