20604203 has 2 divisors, whose sum is σ = 20604204. Its totient is φ = 20604202.

The previous prime is 20604197. The next prime is 20604211. The reversal of 20604203 is 30240602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20604203 - 2⁶ = 20604139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20604503) 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, 10302101 + 10302102.

It is an arithmetic number, because the mean of its divisors is an integer number (10302102).

Almost surely, 2^20604203 is an apocalyptic number.

20604203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604203 is an equidigital number, since it uses as much as digits as its factorization.

20604203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20604203 is about 4539.1852793205. The cubic root of 20604203 is about 274.1481208475.

Adding to 20604203 its reverse (30240602), we get a palindrome (50844805).

The spelling of 20604203 in words is "twenty million, six hundred four thousand, two hundred three".