722545 has 16 divisors (see below), whose sum is σ = 928512. Its totient is φ = 538560.

The previous prime is 722539. The next prime is 722563. The reversal of 722545 is 545227.

It is not a de Polignac number, because 722545 - 2³ = 722537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6964 + ... + 7066.

It is an arithmetic number, because the mean of its divisors is an integer number (58032).

2⁷²²⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

722545 is a deficient number, since it is larger than the sum of its proper divisors (205967).

722545 is a wasteful number, since it uses less digits than its factorization.

722545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192.

The product of its digits is 2800, while the sum is 25.

The square root of 722545 is about 850.0264701761. The cubic root of 722545 is about 89.7335742216.

The spelling of 722545 in words is "seven hundred twenty-two thousand, five hundred forty-five".