220668824 has 8 divisors (see below), whose sum is σ = 413754060. Its totient is φ = 110334408.

The previous prime is 220668817. The next prime is 220668871. The reversal of 220668824 is 428866022.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 13791794 + ... + 13791809.

Almost surely, 2^220668824 is an apocalyptic number.

It is an amenable number.

220668824 is a deficient number, since it is larger than the sum of its proper divisors (193085236).

220668824 is a wasteful number, since it uses less digits than its factorization.

220668824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27583609 (or 27583605 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 220668824 is about 14854.9259170149. The cubic root of 220668824 is about 604.2922069003.

The spelling of 220668824 in words is "two hundred twenty million, six hundred sixty-eight thousand, eight hundred twenty-four".