220668009 has 8 divisors (see below), whose sum is σ = 295487712. Its totient is φ = 146480160.

The previous prime is 220668001. The next prime is 220668011. The reversal of 220668009 is 900866022.

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

It is not a de Polignac number, because 220668009 - 2³ = 220668001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220668001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157147 + ... + 158544.

It is an arithmetic number, because the mean of its divisors is an integer number (36935964).

Almost surely, 2^220668009 is an apocalyptic number.

It is an amenable number.

220668009 is a deficient number, since it is larger than the sum of its proper divisors (74819703).

220668009 is a wasteful number, since it uses less digits than its factorization.

220668009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315927.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 220668009 is about 14854.8984850116. The cubic root of 220668009 is about 604.2914629518.

The spelling of 220668009 in words is "two hundred twenty million, six hundred sixty-eight thousand, nine".