222605065 has 8 divisors (see below), whose sum is σ = 267641928. Its totient is φ = 177740160.

The previous prime is 222605057. The next prime is 222605069. The reversal of 222605065 is 560506222.

It can be written as a sum of positive squares in 4 ways, for example, as 24443136 + 198161929 = 4944^2 + 14077^2 .

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

It is not a de Polignac number, because 222605065 - 2³ = 222605057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222605069) by changing a digit.

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, 40122 + ... + 45331.

It is an arithmetic number, because the mean of its divisors is an integer number (33455241).

Almost surely, 2^222605065 is an apocalyptic number.

It is an amenable number.

222605065 is a deficient number, since it is larger than the sum of its proper divisors (45036863).

222605065 is an equidigital number, since it uses as much as digits as its factorization.

222605065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85979.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 222605065 is about 14919.9552613270. The cubic root of 222605065 is about 606.0545004664.

The spelling of 222605065 in words is "two hundred twenty-two million, six hundred five thousand, sixty-five".