722544 has 20 divisors (see below), whose sum is σ = 1866696. Its totient is φ = 240832.

The previous prime is 722539. The next prime is 722563. The reversal of 722544 is 445227.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7479 + ... + 7574.

2⁷²²⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

722544 is an abundant number, since it is smaller than the sum of its proper divisors (1144152).

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

722544 is a wasteful number, since it uses less digits than its factorization.

722544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15064 (or 15058 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 722544 is about 850.0258819589. The cubic root of 722544 is about 89.7335328245.

The spelling of 722544 in words is "seven hundred twenty-two thousand, five hundred forty-four".