720339 has 4 divisors (see below), whose sum is σ = 960456. Its totient is φ = 480224.

The previous prime is 720319. The next prime is 720359. The reversal of 720339 is 933027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933027 = 3 ⋅311009.

It is an interprime number because it is at equal distance from previous prime (720319) and next prime (720359).

It is a cyclic number.

It is not a de Polignac number, because 720339 - 2⁷ = 720211 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720339.

It is not an unprimeable number, because it can be changed into a prime (720319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120054 + ... + 120059.

It is an arithmetic number, because the mean of its divisors is an integer number (240114).

2⁷²⁰³³⁹ is an apocalyptic number.

720339 is a deficient number, since it is larger than the sum of its proper divisors (240117).

720339 is a wasteful number, since it uses less digits than its factorization.

720339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240116.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 720339 is about 848.7278715819. The cubic root of 720339 is about 89.6421593556.

The spelling of 720339 in words is "seven hundred twenty thousand, three hundred thirty-nine".