722904 has 64 divisors (see below), whose sum is σ = 2231040. Its totient is φ = 190080.

The previous prime is 722903. The next prime is 722921. The reversal of 722904 is 409227.

722904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×722904³ = 1133347623109857792, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2019 + ... + 2349.

It is an arithmetic number, because the mean of its divisors is an integer number (34860).

2⁷²²⁹⁰⁴ 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 722904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115520).

722904 is an abundant number, since it is smaller than the sum of its proper divisors (1508136).

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

722904 is a wasteful number, since it uses less digits than its factorization.

722904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 722904 is about 850.2376138469. The cubic root of 722904 is about 89.7484332819.

The spelling of 722904 in words is "seven hundred twenty-two thousand, nine hundred four".