722117 has 4 divisors (see below), whose sum is σ = 787776. Its totient is φ = 656460.

The previous prime is 722093. The next prime is 722119. The reversal of 722117 is 711227.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722117 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32813 + ... + 32834.

It is an arithmetic number, because the mean of its divisors is an integer number (196944).

2⁷²²¹¹⁷ is an apocalyptic number.

It is an amenable number.

722117 is a deficient number, since it is larger than the sum of its proper divisors (65659).

722117 is a wasteful number, since it uses less digits than its factorization.

722117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65658.

The product of its digits is 196, while the sum is 20.

The square root of 722117 is about 849.7746760171. The cubic root of 722117 is about 89.7158528083.

The spelling of 722117 in words is "seven hundred twenty-two thousand, one hundred seventeen", and thus it is an iban number.