720233217 has 24 divisors (see below), whose sum is σ = 1159067520. Its totient is φ = 427214880.

The previous prime is 720233149. The next prime is 720233221. The reversal of 720233217 is 712332027.

It is a happy number.

720233217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 720233217 - 2¹⁰ = 720232193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720234217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72742 + ... + 82047.

It is an arithmetic number, because the mean of its divisors is an integer number (48294480).

Almost surely, 2^720233217 is an apocalyptic number.

It is an amenable number.

720233217 is a deficient number, since it is larger than the sum of its proper divisors (438834303).

720233217 is a wasteful number, since it uses less digits than its factorization.

720233217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154853 (or 154850 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 720233217 is about 26837.1611203570. The cubic root of 720233217 is about 896.3777110657.

The spelling of 720233217 in words is "seven hundred twenty million, two hundred thirty-three thousand, two hundred seventeen".