728668877323 has 8 divisors (see below), whose sum is σ = 732764235008. Its totient is φ = 724576817664.

The previous prime is 728668877311. The next prime is 728668877333. The reversal of 728668877323 is 323778866827.

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 728668877323 - 2⁹ = 728668876811 is a prime.

It is a super-2 number, since 2×728668877323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728668877333) 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, 380715 + ... + 1265812.

It is an arithmetic number, because the mean of its divisors is an integer number (91595529376).

Almost surely, 2^728668877323 is an apocalyptic number.

728668877323 is a deficient number, since it is larger than the sum of its proper divisors (4095357685).

728668877323 is a wasteful number, since it uses less digits than its factorization.

728668877323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649013.

The product of its digits is 227598336, while the sum is 67.

The spelling of 728668877323 in words is "seven hundred twenty-eight billion, six hundred sixty-eight million, eight hundred seventy-seven thousand, three hundred twenty-three".