220604005 has 4 divisors (see below), whose sum is σ = 264724812. Its totient is φ = 176483200.

The previous prime is 220603993. The next prime is 220604011. The reversal of 220604005 is 500406022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155301444 + 65302561 = 12462^2 + 8081^2 .

It is not a de Polignac number, because 220604005 - 2¹¹ = 220601957 is a prime.

It is a super-2 number, since 2×220604005² = 97332254044080050, which contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 22060396 + ... + 22060405.

It is an arithmetic number, because the mean of its divisors is an integer number (66181203).

Almost surely, 2^220604005 is an apocalyptic number.

It is an amenable number.

220604005 is a deficient number, since it is larger than the sum of its proper divisors (44120807).

220604005 is an equidigital number, since it uses as much as digits as its factorization.

220604005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44120806.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220604005 is about 14852.7440225704. The cubic root of 220604005 is about 604.2330330795.

The spelling of 220604005 in words is "two hundred twenty million, six hundred four thousand, five".