720833 has 4 divisors (see below), whose sum is σ = 725040. Its totient is φ = 716628.

The previous prime is 720829. The next prime is 720847. The reversal of 720833 is 338027.

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.

It is a cyclic number.

It is not a de Polignac number, because 720833 - 2² = 720829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720799 and 720808.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720833.

It is not an unprimeable number, because it can be changed into a prime (720133) 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, 1835 + ... + 2192.

It is an arithmetic number, because the mean of its divisors is an integer number (181260).

2⁷²⁰⁸³³ is an apocalyptic number.

It is an amenable number.

720833 is a deficient number, since it is larger than the sum of its proper divisors (4207).

720833 is a wasteful number, since it uses less digits than its factorization.

720833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 720833 is about 849.0188454917. The cubic root of 720833 is about 89.6626465186.

The spelling of 720833 in words is "seven hundred twenty thousand, eight hundred thirty-three".