728560668 has 48 divisors (see below), whose sum is σ = 1856445696. Its totient is φ = 220546560.

The previous prime is 728560661. The next prime is 728560709. The reversal of 728560668 is 866065827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728560661) 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, 159180 + ... + 163692.

It is an arithmetic number, because the mean of its divisors is an integer number (38675952).

Almost surely, 2^728560668 is an apocalyptic number.

It is an amenable number.

728560668 is an abundant number, since it is smaller than the sum of its proper divisors (1127885028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728560668 is a wasteful number, since it uses less digits than its factorization.

728560668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5754 (or 5752 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 728560668 is about 26991.8629960957. The cubic root of 728560668 is about 899.8191686074.

The spelling of 728560668 in words is "seven hundred twenty-eight million, five hundred sixty thousand, six hundred sixty-eight".