722216626 has 8 divisors (see below), whose sum is σ = 1087323264. Its totient is φ = 359775540.

The previous prime is 722216611. The next prime is 722216633. The reversal of 722216626 is 626612227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 722216591 and 722216600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665710 + ... + 666793.

It is an arithmetic number, because the mean of its divisors is an integer number (135915408).

Almost surely, 2^722216626 is an apocalyptic number.

722216626 is a deficient number, since it is larger than the sum of its proper divisors (365106638).

722216626 is a wasteful number, since it uses less digits than its factorization.

722216626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332776.

The product of its digits is 24192, while the sum is 34.

The square root of 722216626 is about 26874.0883752361. The cubic root of 722216626 is about 897.1997846506.

The spelling of 722216626 in words is "seven hundred twenty-two million, two hundred sixteen thousand, six hundred twenty-six".