220798664 has 16 divisors (see below), whose sum is σ = 414446220. Its totient is φ = 110279680.

The previous prime is 220798649. The next prime is 220798667. The reversal of 220798664 is 466897022.

It can be written as a sum of positive squares in 2 ways, for example, as 209033764 + 11764900 = 14458^2 + 3430^2 .

It is not an unprimeable number, because it can be changed into a prime (220798667) 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 3 ways as a sum of consecutive naturals, for example, 6857 + ... + 22104.

Almost surely, 2^220798664 is an apocalyptic number.

It is an amenable number.

220798664 is a deficient number, since it is larger than the sum of its proper divisors (193647556).

220798664 is a wasteful number, since it uses less digits than its factorization.

220798664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29920 (or 29916 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 220798664 is about 14859.2955418485. The cubic root of 220798664 is about 604.4107041051.

The spelling of 220798664 in words is "two hundred twenty million, seven hundred ninety-eight thousand, six hundred sixty-four".