720803 has 8 divisors (see below), whose sum is σ = 772800. Its totient is φ = 670248.

The previous prime is 720793. The next prime is 720829. The reversal of 720803 is 308027.

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 720803 - 2⁸ = 720547 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 720803.

It is not an unprimeable number, because it can be changed into a prime (720403) 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, 800 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (96600).

2⁷²⁰⁸⁰³ is an apocalyptic number.

720803 is a deficient number, since it is larger than the sum of its proper divisors (51997).

720803 is a wasteful number, since it uses less digits than its factorization.

720803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 720803 is about 849.0011778555. The cubic root of 720803 is about 89.6614026259.

The spelling of 720803 in words is "seven hundred twenty thousand, eight hundred three".