219868064 has 36 divisors (see below), whose sum is σ = 466804674. Its totient is φ = 101337984.

The previous prime is 219868049. The next prime is 219868081. The reversal of 219868064 is 460868912.

It is a happy number.

219868064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 211411600 + 8456464 = 14540^2 + 2908^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 302069 + ... + 302795.

Almost surely, 2^219868064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219868064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233402337).

219868064 is an abundant number, since it is smaller than the sum of its proper divisors (246936610).

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

219868064 is an frugal number, since it uses more digits than its factorization.

219868064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 219868064 is about 14827.9487455278. The cubic root of 219868064 is about 603.5603718719.

The spelling of 219868064 in words is "two hundred nineteen million, eight hundred sixty-eight thousand, sixty-four".