722216173 has 16 divisors (see below), whose sum is σ = 832000000. Its totient is φ = 614105712.

The previous prime is 722216141. The next prime is 722216177. The reversal of 722216173 is 371612227.

It is a cyclic number.

It is not a de Polignac number, because 722216173 - 2⁵ = 722216141 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 (722216177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694588 + ... + 695626.

It is an arithmetic number, because the mean of its divisors is an integer number (52000000).

Almost surely, 2^722216173 is an apocalyptic number.

It is an amenable number.

722216173 is a deficient number, since it is larger than the sum of its proper divisors (109783827).

722216173 is a wasteful number, since it uses less digits than its factorization.

722216173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744.

The product of its digits is 7056, while the sum is 31.

The square root of 722216173 is about 26874.0799470419. The cubic root of 722216173 is about 897.1995970653.

The spelling of 722216173 in words is "seven hundred twenty-two million, two hundred sixteen thousand, one hundred seventy-three".