20008207 has 2 divisors, whose sum is σ = 20008208. Its totient is φ = 20008206.

The previous prime is 20008199. The next prime is 20008211. The reversal of 20008207 is 70280002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20008207 - 2³ = 20008199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20008217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10004103 + 10004104.

It is an arithmetic number, because the mean of its divisors is an integer number (10004104).

Almost surely, 2^20008207 is an apocalyptic number.

20008207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20008207 is an equidigital number, since it uses as much as digits as its factorization.

20008207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20008207 is about 4473.0534313822. The cubic root of 20008207 is about 271.4788852910.

Adding to 20008207 its reverse (70280002), we get a palindrome (90288209).

The spelling of 20008207 in words is "twenty million, eight thousand, two hundred seven".