220644115 has 8 divisors (see below), whose sum is σ = 264852720. Its totient is φ = 176462112.

The previous prime is 220644103. The next prime is 220644119. The reversal of 220644115 is 511446022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220644115 - 2¹⁷ = 220513043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220644115.

It is not an unprimeable number, because it can be changed into a prime (220644119) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28492 + ... + 35398.

It is an arithmetic number, because the mean of its divisors is an integer number (33106590).

Almost surely, 2^220644115 is an apocalyptic number.

220644115 is a deficient number, since it is larger than the sum of its proper divisors (44208605).

220644115 is an equidigital number, since it uses as much as digits as its factorization.

220644115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13301.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 220644115 is about 14854.0942167471. The cubic root of 220644115 is about 604.2696512092.

The spelling of 220644115 in words is "two hundred twenty million, six hundred forty-four thousand, one hundred fifteen".