720680313 has 8 divisors (see below), whose sum is σ = 966276000. Its totient is φ = 477769088.

The previous prime is 720680243. The next prime is 720680353. The reversal of 720680313 is 313086027.

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

It is a cyclic number.

It is not a de Polignac number, because 720680313 - 2⁸ = 720680057 is a prime.

It is a super-2 number, since 2×720680313² = 1038760227091555938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (720680353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670488 + ... + 671561.

It is an arithmetic number, because the mean of its divisors is an integer number (120784500).

Almost surely, 2^720680313 is an apocalyptic number.

It is an amenable number.

720680313 is a deficient number, since it is larger than the sum of its proper divisors (245595687).

720680313 is a wasteful number, since it uses less digits than its factorization.

720680313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342231.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 720680313 is about 26845.4896211636. The cubic root of 720680313 is about 896.5631528462.

The spelling of 720680313 in words is "seven hundred twenty million, six hundred eighty thousand, three hundred thirteen".