728917655 has 8 divisors (see below), whose sum is σ = 883719312. Its totient is φ = 577122048.

The previous prime is 728917627. The next prime is 728917711. The reversal of 728917655 is 556719827.

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 728917655 - 2¹⁰ = 728916631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750977 + ... + 751946.

It is an arithmetic number, because the mean of its divisors is an integer number (110464914).

Almost surely, 2^728917655 is an apocalyptic number.

728917655 is a deficient number, since it is larger than the sum of its proper divisors (154801657).

728917655 is a wasteful number, since it uses less digits than its factorization.

728917655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503025.

The product of its digits is 1058400, while the sum is 50.

The square root of 728917655 is about 26998.4750495283. The cubic root of 728917655 is about 899.9661118927.

The spelling of 728917655 in words is "seven hundred twenty-eight million, nine hundred seventeen thousand, six hundred fifty-five".