720537117 has 8 divisors (see below), whose sum is σ = 972877440. Its totient is φ = 474277440.

The previous prime is 720537107. The next prime is 720537143. The reversal of 720537117 is 711735027.

720537117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 720537117 - 2⁴ = 720537101 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720537107) 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, 1519884 + ... + 1520357.

It is an arithmetic number, because the mean of its divisors is an integer number (121609680).

Almost surely, 2^720537117 is an apocalyptic number.

It is an amenable number.

720537117 is a deficient number, since it is larger than the sum of its proper divisors (252340323).

720537117 is a wasteful number, since it uses less digits than its factorization.

720537117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040323.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 720537117 is about 26842.8224484684. The cubic root of 720537117 is about 896.5037678646.

The spelling of 720537117 in words is "seven hundred twenty million, five hundred thirty-seven thousand, one hundred seventeen".