722109 has 8 divisors (see below), whose sum is σ = 1019520. Its totient is φ = 453056.

The previous prime is 722093. The next prime is 722119. The reversal of 722109 is 901227.

It is a happy number.

722109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 722109 - 2⁴ = 722093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722119) 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, 7029 + ... + 7130.

It is an arithmetic number, because the mean of its divisors is an integer number (127440).

2⁷²²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

722109 is a deficient number, since it is larger than the sum of its proper divisors (297411).

722109 is a wasteful number, since it uses less digits than its factorization.

722109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14179.

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

The square root of 722109 is about 849.7699688739. The cubic root of 722109 is about 89.7155215003.

The spelling of 722109 in words is "seven hundred twenty-two thousand, one hundred nine".