728860662193 has 4 divisors (see below), whose sum is σ = 729277870960. Its totient is φ = 728443453428.

The previous prime is 728860662157. The next prime is 728860662199. The reversal of 728860662193 is 391266068827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728860662193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728860662199) 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, 208601763 + ... + 208605256.

It is an arithmetic number, because the mean of its divisors is an integer number (182319467740).

Almost surely, 2^728860662193 is an apocalyptic number.

It is an amenable number.

728860662193 is a deficient number, since it is larger than the sum of its proper divisors (417208767).

728860662193 is a wasteful number, since it uses less digits than its factorization.

728860662193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417208766.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 728860662193 in words is "seven hundred twenty-eight billion, eight hundred sixty million, six hundred sixty-two thousand, one hundred ninety-three".