722980 has 24 divisors (see below), whose sum is σ = 1560888. Its totient is φ = 281088.

The previous prime is 722977. The next prime is 722983. The reversal of 722980 is 89227.

It is an interprime number because it is at equal distance from previous prime (722977) and next prime (722983).

It can be written as a sum of positive squares in 4 ways, for example, as 381924 + 341056 = 618^2 + 584^2 .

It is not an unprimeable number, because it can be changed into a prime (722983) 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, 252 + ... + 1228.

It is an arithmetic number, because the mean of its divisors is an integer number (65037).

2⁷²²⁹⁸⁰ 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 722980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780444).

722980 is an abundant number, since it is smaller than the sum of its proper divisors (837908).

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

722980 is a wasteful number, since it uses less digits than its factorization.

722980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 722980 is about 850.2823060608. The cubic root of 722980 is about 89.7515783016.

The spelling of 722980 in words is "seven hundred twenty-two thousand, nine hundred eighty".