728611286646 has 8 divisors (see below), whose sum is σ = 1457222573304. Its totient is φ = 242870428880.

The previous prime is 728611286629. The next prime is 728611286657. The reversal of 728611286646 is 646682116827.

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

728611286646 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60717607215 + ... + 60717607226.

It is an arithmetic number, because the mean of its divisors is an integer number (182152821663).

Almost surely, 2^728611286646 is an apocalyptic number.

728611286646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

728611286646 is a wasteful number, since it uses less digits than its factorization.

728611286646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121435214446.

The product of its digits is 9289728, while the sum is 57.

The spelling of 728611286646 in words is "seven hundred twenty-eight billion, six hundred eleven million, two hundred eighty-six thousand, six hundred forty-six".