220644006 has 32 divisors (see below), whose sum is σ = 498009600. Its totient is φ = 64555680.

The previous prime is 220643999. The next prime is 220644023. The reversal of 220644006 is 600446022.

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 in 15 ways as a sum of consecutive naturals, for example, 55726 + ... + 59553.

It is an arithmetic number, because the mean of its divisors is an integer number (15562800).

Almost surely, 2^220644006 is an apocalyptic number.

220644006 is an abundant number, since it is smaller than the sum of its proper divisors (277365594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220644006 is a wasteful number, since it uses less digits than its factorization.

220644006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115324.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 220644006 is about 14854.0905477246. The cubic root of 220644006 is about 604.2695517045.

The spelling of 220644006 in words is "two hundred twenty million, six hundred forty-four thousand, six".