220255689 has 32 divisors (see below), whose sum is σ = 320229504. Its totient is φ = 134138880.

The previous prime is 220255643. The next prime is 220255699. The reversal of 220255689 is 986552022.

It is not a de Polignac number, because 220255689 - 2⁸ = 220255433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220255639) 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 31 ways as a sum of consecutive naturals, for example, 257787 + ... + 258639.

It is an arithmetic number, because the mean of its divisors is an integer number (10007172).

Almost surely, 2^220255689 is an apocalyptic number.

It is an amenable number.

220255689 is a deficient number, since it is larger than the sum of its proper divisors (99973815).

220255689 is a wasteful number, since it uses less digits than its factorization.

220255689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 220255689 is about 14841.0137456981. The cubic root of 220255689 is about 603.9148537563.

The spelling of 220255689 in words is "two hundred twenty million, two hundred fifty-five thousand, six hundred eighty-nine".