220424665 has 8 divisors (see below), whose sum is σ = 270661248. Its totient is φ = 172238640.

The previous prime is 220424653. The next prime is 220424731. The reversal of 220424665 is 566424022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220424665 - 2¹⁹ = 219900377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512401 + ... + 512830.

It is an arithmetic number, because the mean of its divisors is an integer number (33832656).

Almost surely, 2^220424665 is an apocalyptic number.

It is an amenable number.

220424665 is a deficient number, since it is larger than the sum of its proper divisors (50236583).

220424665 is a wasteful number, since it uses less digits than its factorization.

220424665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025279.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 220424665 is about 14846.7055268164. The cubic root of 220424665 is about 604.0692516316.

Adding to 220424665 its reverse (566424022), we get a palindrome (786848687).

The spelling of 220424665 in words is "two hundred twenty million, four hundred twenty-four thousand, six hundred sixty-five".