20200087 has 2 divisors, whose sum is σ = 20200088. Its totient is φ = 20200086.

The previous prime is 20200057. The next prime is 20200093. The reversal of 20200087 is 78000202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20200087 - 2¹¹ = 20198039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200027) 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, 10100043 + 10100044.

It is an arithmetic number, because the mean of its divisors is an integer number (10100044).

Almost surely, 2^20200087 is an apocalyptic number.

20200087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200087 is an equidigital number, since it uses as much as digits as its factorization.

20200087 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20200087 is about 4494.4506894614. The cubic root of 20200087 is about 272.3439591446.

Adding to 20200087 its reverse (78000202), we get a palindrome (98200289).

The spelling of 20200087 in words is "twenty million, two hundred thousand, eighty-seven".