722708 has 24 divisors (see below), whose sum is σ = 1475712. Its totient is φ = 303264.

The previous prime is 722669. The next prime is 722713. The reversal of 722708 is 807227.

It is a congruent number.

It is an unprimeable number.

722708 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, 1241 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (61488).

2⁷²²⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737856).

722708 is an abundant number, since it is smaller than the sum of its proper divisors (753004).

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

722708 is a wasteful number, since it uses less digits than its factorization.

722708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 722708 is about 850.1223441364. The cubic root of 722708 is about 89.7403214243.

The spelling of 722708 in words is "seven hundred twenty-two thousand, seven hundred eight".