728648174773 has 4 divisors (see below), whose sum is σ = 729149654668. Its totient is φ = 728146694880.

The previous prime is 728648174731. The next prime is 728648174801. The reversal of 728648174773 is 377471846827.

728648174773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 342860604849 + 385787569924 = 585543^2 + 621118^2 .

It is a cyclic number.

It is not a de Polignac number, because 728648174773 - 2¹³ = 728648166581 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 (728648174173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250737768 + ... + 250740673.

It is an arithmetic number, because the mean of its divisors is an integer number (182287413667).

Almost surely, 2^728648174773 is an apocalyptic number.

It is an amenable number.

728648174773 is a deficient number, since it is larger than the sum of its proper divisors (501479895).

728648174773 is a wasteful number, since it uses less digits than its factorization.

728648174773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501479894.

The product of its digits is 88510464, while the sum is 64.

The spelling of 728648174773 in words is "seven hundred twenty-eight billion, six hundred forty-eight million, one hundred seventy-four thousand, seven hundred seventy-three".