722555 has 4 divisors (see below), whose sum is σ = 867072. Its totient is φ = 578040.

The previous prime is 722539. The next prime is 722563. The reversal of 722555 is 555227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555227 = 151 ⋅3677.

It is not a de Polignac number, because 722555 - 2⁴ = 722539 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722555.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 72251 + ... + 72260.

It is an arithmetic number, because the mean of its divisors is an integer number (216768).

2⁷²²⁵⁵⁵ is an apocalyptic number.

722555 is a deficient number, since it is larger than the sum of its proper divisors (144517).

722555 is a wasteful number, since it uses less digits than its factorization.

722555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144516.

The product of its digits is 3500, while the sum is 26.

The square root of 722555 is about 850.0323523255. The cubic root of 722555 is about 89.7339881896.

The spelling of 722555 in words is "seven hundred twenty-two thousand, five hundred fifty-five".