220898 has 16 divisors (see below), whose sum is σ = 359640. Its totient is φ = 101376.

The previous prime is 220897. The next prime is 220901. The reversal of 220898 is 898022.

It can be written as a sum of positive squares in 4 ways, for example, as 190969 + 29929 = 437^2 + 173^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220898.

It is not an unprimeable number, because it can be changed into a prime (220897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2438 + ... + 2526.

2²²⁰⁸⁹⁸ is an apocalyptic number.

220898 is a deficient number, since it is larger than the sum of its proper divisors (138742).

220898 is a wasteful number, since it uses less digits than its factorization.

220898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 220898 is about 469.9978723356. The cubic root of 220898 is about 60.4501330771.

The spelling of 220898 in words is "two hundred twenty thousand, eight hundred ninety-eight".