720233 has 4 divisors (see below), whose sum is σ = 758160. Its totient is φ = 682308.

The previous prime is 720229. The next prime is 720241. The reversal of 720233 is 332027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332027 = 17 ⋅19531.

It is a cyclic number.

It is not a de Polignac number, because 720233 - 2² = 720229 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720233.

It is not an unprimeable number, because it can be changed into a prime (720253) 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 3 ways as a sum of consecutive naturals, for example, 18935 + ... + 18972.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

2⁷²⁰²³³ is an apocalyptic number.

It is an amenable number.

720233 is a deficient number, since it is larger than the sum of its proper divisors (37927).

720233 is a wasteful number, since it uses less digits than its factorization.

720233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37926.

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 720233 is about 848.6654228847. The cubic root of 720233 is about 89.6377621042.

The spelling of 720233 in words is "seven hundred twenty thousand, two hundred thirty-three".