722407 has 12 divisors (see below), whose sum is σ = 878256. Its totient is φ = 591360.

The previous prime is 722389. The next prime is 722411. The reversal of 722407 is 704227.

It is not a de Polignac number, because 722407 - 2¹¹ = 720359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (73188).

2⁷²²⁴⁰⁷ is an apocalyptic number.

722407 is a deficient number, since it is larger than the sum of its proper divisors (155849).

722407 is a wasteful number, since it uses less digits than its factorization.

722407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 722407 is about 849.9452923571. The cubic root of 722407 is about 89.7278610726.

The spelling of 722407 in words is "seven hundred twenty-two thousand, four hundred seven", and thus it is an iban number.