20604211 has 2 divisors, whose sum is σ = 20604212. Its totient is φ = 20604210.

The previous prime is 20604203. The next prime is 20604247. The reversal of 20604211 is 11240602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20604211 - 2³ = 20604203 is a prime.

It is not a weakly prime, because it can be changed into another prime (20604011) by changing a digit.

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 as a sum of consecutive naturals, namely, 10302105 + 10302106.

It is an arithmetic number, because the mean of its divisors is an integer number (10302106).

Almost surely, 2^20604211 is an apocalyptic number.

20604211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604211 is an equidigital number, since it uses as much as digits as its factorization.

20604211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20604211 is about 4539.1861605358. The cubic root of 20604211 is about 274.1481563287.

Adding to 20604211 its reverse (11240602), we get a palindrome (31844813).

The spelling of 20604211 in words is "twenty million, six hundred four thousand, two hundred eleven".