220660424 has 32 divisors (see below), whose sum is σ = 422711040. Its totient is φ = 107956800.

The previous prime is 220660421. The next prime is 220660439. The reversal of 220660424 is 424066022.

220660424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 220660393 and 220660402.

It is not an unprimeable number, because it can be changed into a prime (220660421) 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, 101897 + ... + 104039.

It is an arithmetic number, because the mean of its divisors is an integer number (13209720).

Almost surely, 2^220660424 is an apocalyptic number.

It is an amenable number.

220660424 is a deficient number, since it is larger than the sum of its proper divisors (202050616).

220660424 is a wasteful number, since it uses less digits than its factorization.

220660424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 220660424 is about 14854.6431798276. The cubic root of 220660424 is about 604.2845391219.

The spelling of 220660424 in words is "two hundred twenty million, six hundred sixty thousand, four hundred twenty-four".