20207417 has 2 divisors, whose sum is σ = 20207418. Its totient is φ = 20207416.

The previous prime is 20207389. The next prime is 20207419. The reversal of 20207417 is 71470202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18696976 + 1510441 = 4324^2 + 1229^2 .

It is a cyclic number.

It is not a de Polignac number, because 20207417 - 2¹⁸ = 19945273 is a prime.

Together with 20207419, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20207392 and 20207401.

It is not a weakly prime, because it can be changed into another prime (20207419) 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, 10103708 + 10103709.

It is an arithmetic number, because the mean of its divisors is an integer number (10103709).

Almost surely, 2^20207417 is an apocalyptic number.

It is an amenable number.

20207417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20207417 is an equidigital number, since it uses as much as digits as its factorization.

20207417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20207417 is about 4495.2660655405. The cubic root of 20207417 is about 272.3768969533.

Adding to 20207417 its reverse (71470202), we get a palindrome (91677619).

The spelling of 20207417 in words is "twenty million, two hundred seven thousand, four hundred seventeen".