20604107 has 2 divisors, whose sum is σ = 20604108. Its totient is φ = 20604106.

The previous prime is 20604047. The next prime is 20604131. The reversal of 20604107 is 70140602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20604107 is a prime.

It is not a weakly prime, because it can be changed into another prime (20604137) 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, 10302053 + 10302054.

It is an arithmetic number, because the mean of its divisors is an integer number (10302054).

Almost surely, 2^20604107 is an apocalyptic number.

20604107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604107 is an equidigital number, since it uses as much as digits as its factorization.

20604107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20604107 is about 4539.1747047233. The cubic root of 20604107 is about 274.1476950726.

Adding to 20604107 its reverse (70140602), we get a palindrome (90744709).

The spelling of 20604107 in words is "twenty million, six hundred four thousand, one hundred seven".