220568064 has 80 divisors (see below), whose sum is σ = 622245888. Its totient is φ = 69189632.

The previous prime is 220568053. The next prime is 220568071. The reversal of 220568064 is 460865022.

220568064 is nontrivially palindromic in base 5.

It is a congruent 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, 21889 + ... + 30335.

Almost surely, 2^220568064 is an apocalyptic number.

220568064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220568064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311122944).

220568064 is an abundant number, since it is smaller than the sum of its proper divisors (401677824).

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

220568064 is an equidigital number, since it uses as much as digits as its factorization.

220568064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485 (or 8469 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 220568064 is about 14851.5340621769. The cubic root of 220568064 is about 604.2002172368.

The spelling of 220568064 in words is "two hundred twenty million, five hundred sixty-eight thousand, sixty-four".