728611286647 has 16 divisors (see below), whose sum is σ = 745586519040. Its totient is φ = 711698437728.

The previous prime is 728611286629. The next prime is 728611286657. The reversal of 728611286647 is 746682116827.

It is a cyclic number.

It is not a de Polignac number, because 728611286647 - 2¹⁵ = 728611253879 is a prime.

It is a super-3 number, since 3×728611286647³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728611286591 and 728611286600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728611286657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105485368 + ... + 105492274.

It is an arithmetic number, because the mean of its divisors is an integer number (46599157440).

Almost surely, 2^728611286647 is an apocalyptic number.

728611286647 is a deficient number, since it is larger than the sum of its proper divisors (16975232393).

728611286647 is a wasteful number, since it uses less digits than its factorization.

728611286647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070.

The product of its digits is 10838016, while the sum is 58.

The spelling of 728611286647 in words is "seven hundred twenty-eight billion, six hundred eleven million, two hundred eighty-six thousand, six hundred forty-seven".