722543 has 4 divisors (see below), whose sum is σ = 740208. Its totient is φ = 704880.

The previous prime is 722539. The next prime is 722563. The reversal of 722543 is 345227.

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 722543 - 2² = 722539 is a prime.

It is a d-powerful number, because it can be written as 7⁶ + 2¹¹ + 5⁵ + 2¹⁹ + 4⁷ + 3¹⁰ .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722543.

It is not an unprimeable number, because it can be changed into a prime (722563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8771 + ... + 8852.

It is an arithmetic number, because the mean of its divisors is an integer number (185052).

2⁷²²⁵⁴³ is an apocalyptic number.

722543 is a deficient number, since it is larger than the sum of its proper divisors (17665).

722543 is a wasteful number, since it uses less digits than its factorization.

722543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17664.

The product of its digits is 1680, while the sum is 23.

The square root of 722543 is about 850.0252937413. The cubic root of 722543 is about 89.7334914275.

The spelling of 722543 in words is "seven hundred twenty-two thousand, five hundred forty-three".