722706 has 16 divisors (see below), whose sum is σ = 1508544. Its totient is φ = 230384.

The previous prime is 722669. The next prime is 722713. The reversal of 722706 is 607227.

It is a Curzon number.

It is an unprimeable number.

722706 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2481 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (94284).

2⁷²²⁷⁰⁶ is an apocalyptic number.

722706 is an abundant number, since it is smaller than the sum of its proper divisors (785838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722706 is a wasteful number, since it uses less digits than its factorization.

722706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 722706 is about 850.1211678343. The cubic root of 722706 is about 89.7402386427.

The spelling of 722706 in words is "seven hundred twenty-two thousand, seven hundred six".