720239 has 8 divisors (see below), whose sum is σ = 821520. Its totient is φ = 625536.

The previous prime is 720229. The next prime is 720241. The reversal of 720239 is 932027.

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 720239 - 2¹² = 716143 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 (720229) 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, 1409 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (102690).

2⁷²⁰²³⁹ is an apocalyptic number.

720239 is a deficient number, since it is larger than the sum of its proper divisors (101281).

720239 is a wasteful number, since it uses less digits than its factorization.

720239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 720239 is about 848.6689578393. The cubic root of 720239 is about 89.6380110168.

It can be divided in two parts, 720 and 239, that added together give a palindrome (959).

The spelling of 720239 in words is "seven hundred twenty thousand, two hundred thirty-nine".