720328799 has 4 divisors (see below), whose sum is σ = 720398736. Its totient is φ = 720258864.

The previous prime is 720328787. The next prime is 720328801. The reversal of 720328799 is 997823027.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720328799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720328769) 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 3 ways as a sum of consecutive naturals, for example, 16139 + ... + 41244.

It is an arithmetic number, because the mean of its divisors is an integer number (180099684).

Almost surely, 2^720328799 is an apocalyptic number.

720328799 is a deficient number, since it is larger than the sum of its proper divisors (69937).

720328799 is a wasteful number, since it uses less digits than its factorization.

720328799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69936.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 720328799 is about 26838.9418383065. The cubic root of 720328799 is about 896.4173620115.

It can be divided in two parts, 720328 and 799, that added together give a palindrome (721127).

The spelling of 720328799 in words is "seven hundred twenty million, three hundred twenty-eight thousand, seven hundred ninety-nine".