722804 has 6 divisors (see below), whose sum is σ = 1264914. Its totient is φ = 361400.

The previous prime is 722797. The next prime is 722807. The reversal of 722804 is 408227.

722804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 422500 + 300304 = 650^2 + 548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 722804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722807) by changing a digit.

722804 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 as a sum of consecutive naturals, namely, 90347 + ... + 90354.

It is an arithmetic number, because the mean of its divisors is an integer number (210819).

2⁷²²⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

722804 is a deficient number, since it is larger than the sum of its proper divisors (542110).

722804 is a wasteful number, since it uses less digits than its factorization.

722804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180705 (or 180703 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 722804 is about 850.1788047229. The cubic root of 722804 is about 89.7442947623.

The spelling of 722804 in words is "seven hundred twenty-two thousand, eight hundred four".