221704622 has 24 divisors (see below), whose sum is σ = 349367616. Its totient is φ = 105517800.

The previous prime is 221704579. The next prime is 221704627. The reversal of 221704622 is 226407122.

221704622 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221704591 and 221704600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221704627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3634472 + ... + 3634532.

It is an arithmetic number, because the mean of its divisors is an integer number (14556984).

Almost surely, 2^221704622 is an apocalyptic number.

221704622 is a deficient number, since it is larger than the sum of its proper divisors (127662994).

221704622 is an frugal number, since it uses more digits than its factorization.

221704622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 221704622 is about 14889.7488897563. The cubic root of 221704622 is about 605.2362276743.

The spelling of 221704622 in words is "two hundred twenty-one million, seven hundred four thousand, six hundred twenty-two".