720220117 has 8 divisors (see below), whose sum is σ = 753639680. Its totient is φ = 687437280.

The previous prime is 720220093. The next prime is 720220157. The reversal of 720220117 is 711022027.

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 720220117 - 2⁷ = 720219989 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 (720220157) 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, 156867 + ... + 161392.

It is an arithmetic number, because the mean of its divisors is an integer number (94204960).

Almost surely, 2^720220117 is an apocalyptic number.

It is an amenable number.

720220117 is a deficient number, since it is larger than the sum of its proper divisors (33419563).

720220117 is a wasteful number, since it uses less digits than its factorization.

720220117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318363.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 720220117 is about 26836.9170546842. The cubic root of 720220117 is about 896.3722764283.

The spelling of 720220117 in words is "seven hundred twenty million, two hundred twenty thousand, one hundred seventeen".