722744 has 32 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 319200.

The previous prime is 722737. The next prime is 722749. The reversal of 722744 is 447227.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722749) 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, 3689 + ... + 3879.

It is an arithmetic number, because the mean of its divisors is an integer number (47520).

2⁷²²⁷⁴⁴ 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 722744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760320).

722744 is an abundant number, since it is smaller than the sum of its proper divisors (797896).

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

722744 is a wasteful number, since it uses less digits than its factorization.

722744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 247 counting only the distinct ones).

The product of its digits is 3136, while the sum is 26.

The square root of 722744 is about 850.1435172958. The cubic root of 722744 is about 89.7418114673.

The spelling of 722744 in words is "seven hundred twenty-two thousand, seven hundred forty-four", and thus it is an iban number.