220605804 has 72 divisors (see below), whose sum is σ = 598879008. Its totient is φ = 68221440.

The previous prime is 220605799. The next prime is 220605817. The reversal of 220605804 is 408506022.

220605804 is a `hidden beast` number, since 2 + 20 + 60 + 580 + 4 = 666.

220605804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40914 + ... + 45990.

It is an arithmetic number, because the mean of its divisors is an integer number (8317764).

Almost surely, 2^220605804 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 220605804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299439504).

220605804 is an abundant number, since it is smaller than the sum of its proper divisors (378273204).

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

220605804 is a wasteful number, since it uses less digits than its factorization.

220605804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175 (or 5170 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 220605804 is about 14852.8045836468. The cubic root of 220605804 is about 604.2346755584.

The spelling of 220605804 in words is "two hundred twenty million, six hundred five thousand, eight hundred four".