720816099 has 8 divisors (see below), whose sum is σ = 1017622800. Its totient is φ = 452276736.

The previous prime is 720816079. The next prime is 720816127. The reversal of 720816099 is 990618027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720816099 - 2⁷ = 720815971 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 720816099.

It is not an unprimeable number, because it can be changed into a prime (720816079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7066774 + ... + 7066875.

It is an arithmetic number, because the mean of its divisors is an integer number (127202850).

Almost surely, 2^720816099 is an apocalyptic number.

720816099 is a deficient number, since it is larger than the sum of its proper divisors (296806701).

720816099 is a wasteful number, since it uses less digits than its factorization.

720816099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14133669.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 720816099 is about 26848.0185302379. The cubic root of 720816099 is about 896.6194575521.

The spelling of 720816099 in words is "seven hundred twenty million, eight hundred sixteen thousand, ninety-nine".