20336087 has 2 divisors, whose sum is σ = 20336088. Its totient is φ = 20336086.

The previous prime is 20336083. The next prime is 20336089. The reversal of 20336087 is 78063302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20336087 - 2² = 20336083 is a prime.

Together with 20336089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20336083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10168043 + 10168044.

It is an arithmetic number, because the mean of its divisors is an integer number (10168044).

Almost surely, 2^20336087 is an apocalyptic number.

20336087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20336087 is an equidigital number, since it uses as much as digits as its factorization.

20336087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20336087 is about 4509.5550778320. Note that the first 3 decimals coincide. The cubic root of 20336087 is about 272.9537909239.

Adding to 20336087 its reverse (78063302), we get a palindrome (98399389).

The spelling of 20336087 in words is "twenty million, three hundred thirty-six thousand, eighty-seven".