722219 has 4 divisors (see below), whose sum is σ = 734520. Its totient is φ = 709920.

The previous prime is 722213. The next prime is 722237. The reversal of 722219 is 912227.

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 722219 - 2¹⁶ = 656683 is a prime.

It is a super-2 number, since 2×722219² = 1043200567922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722194 and 722203.

It is not an unprimeable number, because it can be changed into a prime (722213) 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, 6062 + ... + 6179.

It is an arithmetic number, because the mean of its divisors is an integer number (183630).

2⁷²²²¹⁹ is an apocalyptic number.

722219 is a deficient number, since it is larger than the sum of its proper divisors (12301).

722219 is a wasteful number, since it uses less digits than its factorization.

722219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12300.

The product of its digits is 504, while the sum is 23.

The square root of 722219 is about 849.8346898074. The cubic root of 722219 is about 89.7200767712.

The spelling of 722219 in words is "seven hundred twenty-two thousand, two hundred nineteen".