222006445 has 8 divisors (see below), whose sum is σ = 268353144. Its totient is φ = 176308224.

The previous prime is 222006413. The next prime is 222006457. The reversal of 222006445 is 544600222.

It can be written as a sum of positive squares in 4 ways, for example, as 26244 + 221980201 = 162^2 + 14899^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 222006445 - 2⁵ = 222006413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161364 + ... + 162733.

It is an arithmetic number, because the mean of its divisors is an integer number (33544143).

Almost surely, 2^222006445 is an apocalyptic number.

It is an amenable number.

222006445 is a deficient number, since it is larger than the sum of its proper divisors (46346699).

222006445 is a wasteful number, since it uses less digits than its factorization.

222006445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324239.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 222006445 is about 14899.8807042204. The cubic root of 222006445 is about 605.5107541726.

Adding to 222006445 its reverse (544600222), we get a palindrome (766606667).

The spelling of 222006445 in words is "two hundred twenty-two million, six thousand, four hundred forty-five".