720716353 has 12 divisors (see below), whose sum is σ = 839155140. Its totient is φ = 617188992.

The previous prime is 720716351. The next prime is 720716363. The reversal of 720716353 is 353617027.

It can be written as a sum of positive squares in 2 ways, for example, as 119093569 + 601622784 = 10913^2 + 24528^2 .

It is not a de Polignac number, because 720716353 - 2¹ = 720716351 is a prime.

It is a super-2 number, since 2×720716353² = 1038864122963241218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720716351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52293 + ... + 64621.

It is an arithmetic number, because the mean of its divisors is an integer number (69929595).

Almost surely, 2^720716353 is an apocalyptic number.

It is an amenable number.

720716353 is a deficient number, since it is larger than the sum of its proper divisors (118438787).

720716353 is a wasteful number, since it uses less digits than its factorization.

720716353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13536 (or 13529 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 720716353 is about 26846.1608614714. The cubic root of 720716353 is about 896.5780977979.

The spelling of 720716353 in words is "seven hundred twenty million, seven hundred sixteen thousand, three hundred fifty-three".