720579668 has 6 divisors (see below), whose sum is σ = 1261014426. Its totient is φ = 360289832.

The previous prime is 720579611. The next prime is 720579721. The reversal of 720579668 is 866975027.

720579668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 522671044 + 197908624 = 22862^2 + 14068^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90072455 + ... + 90072462.

It is an arithmetic number, because the mean of its divisors is an integer number (210169071).

Almost surely, 2^720579668 is an apocalyptic number.

It is an amenable number.

720579668 is a deficient number, since it is larger than the sum of its proper divisors (540434758).

720579668 is a wasteful number, since it uses less digits than its factorization.

720579668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180144921 (or 180144919 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 720579668 is about 26843.6150322567. The cubic root of 720579668 is about 896.5214150614.

The spelling of 720579668 in words is "seven hundred twenty million, five hundred seventy-nine thousand, six hundred sixty-eight".