722019 has 16 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 445536.

The previous prime is 722011. The next prime is 722023. The reversal of 722019 is 910227.

It is a happy number.

It is not a de Polignac number, because 722019 - 2³ = 722011 is a prime.

It is a super-2 number, since 2×722019² = 1042622872722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 721986 and 722004.

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 722019.

It is not an unprimeable number, because it can be changed into a prime (722011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2902 + ... + 3140.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁷²²⁰¹⁹ is an apocalyptic number.

722019 is a deficient number, since it is larger than the sum of its proper divisors (314781).

722019 is a wasteful number, since it uses less digits than its factorization.

722019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 722019 is about 849.7170117163. The cubic root of 722019 is about 89.7117941164.

The spelling of 722019 in words is "seven hundred twenty-two thousand, nineteen".