720363 has 8 divisors (see below), whose sum is σ = 1097728. Its totient is φ = 411624.

The previous prime is 720361. The next prime is 720367. The reversal of 720363 is 363027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720363 - 2¹ = 720361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 34303 = 720363 / (7 + 2 + 0 + 3 + 6 + 3).

It is a Duffinian number.

720363 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (720361) 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, 17131 + ... + 17172.

It is an arithmetic number, because the mean of its divisors is an integer number (137216).

2⁷²⁰³⁶³ is an apocalyptic number.

720363 is a deficient number, since it is larger than the sum of its proper divisors (377365).

720363 is a wasteful number, since it uses less digits than its factorization.

720363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34313.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 720363 is about 848.7420102717. The cubic root of 720363 is about 89.6431548998.

The spelling of 720363 in words is "seven hundred twenty thousand, three hundred sixty-three".