220104065 has 4 divisors (see below), whose sum is σ = 264124884. Its totient is φ = 176083248.

The previous prime is 220104019. The next prime is 220104097. The reversal of 220104065 is 560401022.

It is a happy number.

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 167236624 + 52867441 = 12932^2 + 7271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220104065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22010402 + ... + 22010411.

It is an arithmetic number, because the mean of its divisors is an integer number (66031221).

Almost surely, 2^220104065 is an apocalyptic number.

It is an amenable number.

220104065 is a deficient number, since it is larger than the sum of its proper divisors (44020819).

220104065 is an equidigital number, since it uses as much as digits as its factorization.

220104065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44020818.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 220104065 is about 14835.9045898792. The cubic root of 220104065 is about 603.7762436315.

Adding to 220104065 its reverse (560401022), we get a palindrome (780505087).

The spelling of 220104065 in words is "two hundred twenty million, one hundred four thousand, sixty-five".