220260565 has 32 divisors (see below), whose sum is σ = 310293504. Its totient is φ = 146964480.

The previous prime is 220260541. The next prime is 220260571. The reversal of 220260565 is 565062022.

220260565 = 218² + 219² + ... + 875².

It is not a de Polignac number, because 220260565 - 2⁵ = 220260533 is a prime.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 422505 + ... + 423025.

It is an arithmetic number, because the mean of its divisors is an integer number (9696672).

Almost surely, 2^220260565 is an apocalyptic number.

It is an amenable number.

220260565 is a deficient number, since it is larger than the sum of its proper divisors (90032939).

220260565 is a wasteful number, since it uses less digits than its factorization.

220260565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837.

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

The square root of 220260565 is about 14841.1780192814. The cubic root of 220260565 is about 603.9193101937.

The spelling of 220260565 in words is "two hundred twenty million, two hundred sixty thousand, five hundred sixty-five".