220660286 has 16 divisors (see below), whose sum is σ = 412663680. Its totient is φ = 85971480.

The previous prime is 220660259. The next prime is 220660301. The reversal of 220660286 is 682066022.

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 7 ways as a sum of consecutive naturals, for example, 716276 + ... + 716583.

It is an arithmetic number, because the mean of its divisors is an integer number (25791480).

Almost surely, 2^220660286 is an apocalyptic number.

220660286 is a deficient number, since it is larger than the sum of its proper divisors (192003394).

220660286 is a wasteful number, since it uses less digits than its factorization.

220660286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432879.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 220660286 is about 14854.6385348146. The cubic root of 220660286 is about 604.2844131496.

The spelling of 220660286 in words is "two hundred twenty million, six hundred sixty thousand, two hundred eighty-six".