722017 has 4 divisors (see below), whose sum is σ = 730800. Its totient is φ = 713236.

The previous prime is 722011. The next prime is 722023. The reversal of 722017 is 710227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (722011) and next prime (722023).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722017 is a prime.

It is a Duffinian number.

722017 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 721985 and 722003.

It is not an unprimeable number, because it can be changed into a prime (722011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4267 + ... + 4432.

It is an arithmetic number, because the mean of its divisors is an integer number (182700).

2⁷²²⁰¹⁷ is an apocalyptic number.

It is an amenable number.

722017 is a deficient number, since it is larger than the sum of its proper divisors (8783).

722017 is an equidigital number, since it uses as much as digits as its factorization.

722017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 722017 is about 849.7158348530. The cubic root of 722017 is about 89.7117112821.

The spelling of 722017 in words is "seven hundred twenty-two thousand, seventeen", and thus it is an iban number.