222806345 has 8 divisors (see below), whose sum is σ = 267736776. Its totient is φ = 177998976.

The previous prime is 222806327. The next prime is 222806399. The reversal of 222806345 is 543608222.

It can be written as a sum of positive squares in 4 ways, for example, as 104366656 + 118439689 = 10216^2 + 10883^2 .

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 222806345 - 2¹⁴ = 222789961 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 26732 + ... + 34061.

It is an arithmetic number, because the mean of its divisors is an integer number (33467097).

Almost surely, 2^222806345 is an apocalyptic number.

It is an amenable number.

222806345 is a deficient number, since it is larger than the sum of its proper divisors (44930431).

222806345 is an equidigital number, since it uses as much as digits as its factorization.

222806345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61531.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 222806345 is about 14926.6990657680. The cubic root of 222806345 is about 606.2371107190.

The spelling of 222806345 in words is "two hundred twenty-two million, eight hundred six thousand, three hundred forty-five".