722503 has 4 divisors (see below), whose sum is σ = 728320. Its totient is φ = 716688.

The previous prime is 722489. The next prime is 722509. The reversal of 722503 is 305227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722503 - 2⁹ = 721991 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 (722509) 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, 2718 + ... + 2971.

It is an arithmetic number, because the mean of its divisors is an integer number (182080).

2⁷²²⁵⁰³ is an apocalyptic number.

722503 is a deficient number, since it is larger than the sum of its proper divisors (5817).

722503 is a wasteful number, since it uses less digits than its factorization.

722503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 722503 is about 850.0017647041. The cubic root of 722503 is about 89.7318355141.

It can be divided in two parts, 722 and 503, that added together give a triangular number (1225 = T₄₉).

The spelling of 722503 in words is "seven hundred twenty-two thousand, five hundred three".