220168866 has 16 divisors (see below), whose sum is σ = 440496000. Its totient is φ = 73363248.

The previous prime is 220168843. The next prime is 220168867. The reversal of 220168866 is 668861022.

It is not an unprimeable number, because it can be changed into a prime (220168867) 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 7 ways as a sum of consecutive naturals, for example, 19335 + ... + 28533.

It is an arithmetic number, because the mean of its divisors is an integer number (27531000).

Almost surely, 2^220168866 is an apocalyptic number.

220168866 is an abundant number, since it is smaller than the sum of its proper divisors (220327134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220168866 is a wasteful number, since it uses less digits than its factorization.

220168866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13193.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 220168866 is about 14838.0883539626. The cubic root of 220168866 is about 603.8354905538.

The spelling of 220168866 in words is "two hundred twenty million, one hundred sixty-eight thousand, eight hundred sixty-six".