500636987 has 2 divisors, whose sum is σ = 500636988. Its totient is φ = 500636986.

The previous prime is 500636971. The next prime is 500637013. The reversal of 500636987 is 789636005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 500636987 - 2⁴ = 500636971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (500632987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250318493 + 250318494.

It is an arithmetic number, because the mean of its divisors is an integer number (250318494).

Almost surely, 2^500636987 is an apocalyptic number.

500636987 is a deficient number, since it is larger than the sum of its proper divisors (1).

500636987 is an equidigital number, since it uses as much as digits as its factorization.

500636987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 500636987 is about 22374.9187037629. The cubic root of 500636987 is about 794.0374342318.

The spelling of 500636987 in words is "five hundred million, six hundred thirty-six thousand, nine hundred eighty-seven".