722780 has 24 divisors (see below), whose sum is σ = 1542240. Its totient is φ = 284480.

The previous prime is 722749. The next prime is 722783. The reversal of 722780 is 87227.

722780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722783) 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, 1166 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (64260).

2⁷²²⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

722780 is an abundant number, since it is smaller than the sum of its proper divisors (819460).

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

722780 is a wasteful number, since it uses less digits than its factorization.

722780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 587 counting only the distinct ones).

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

The square root of 722780 is about 850.1646899278. The cubic root of 722780 is about 89.7433014608.

The spelling of 722780 in words is "seven hundred twenty-two thousand, seven hundred eighty".