220605265 has 16 divisors (see below), whose sum is σ = 271484928. Its totient is φ = 171997056.

The previous prime is 220605251. The next prime is 220605271. The reversal of 220605265 is 562506022.

It is a cyclic number.

It is not a de Polignac number, because 220605265 - 2¹¹ = 220603217 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 131824 + ... + 133486.

It is an arithmetic number, because the mean of its divisors is an integer number (16967808).

Almost surely, 2^220605265 is an apocalyptic number.

It is an amenable number.

220605265 is a deficient number, since it is larger than the sum of its proper divisors (50879663).

220605265 is a wasteful number, since it uses less digits than its factorization.

220605265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

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

The square root of 220605265 is about 14852.7864389144. The cubic root of 220605265 is about 604.2341834547.

The spelling of 220605265 in words is "two hundred twenty million, six hundred five thousand, two hundred sixty-five".