722606 has 8 divisors (see below), whose sum is σ = 1101864. Its totient is φ = 355320.

The previous prime is 722599. The next prime is 722611. The reversal of 722606 is 606227.

It is a happy number.

722606 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840 + ... + 3083.

It is an arithmetic number, because the mean of its divisors is an integer number (137733).

2⁷²²⁶⁰⁶ is an apocalyptic number.

722606 is a deficient number, since it is larger than the sum of its proper divisors (379258).

722606 is a wasteful number, since it uses less digits than its factorization.

722606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 722606 is about 850.0623506544. The cubic root of 722606 is about 89.7360993672.

The spelling of 722606 in words is "seven hundred twenty-two thousand, six hundred six".