100000687 has 2 divisors, whose sum is σ = 100000688. Its totient is φ = 100000686.

The previous prime is 100000673. The next prime is 100000717. The reversal of 100000687 is 786000001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100000687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100000627) 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, 50000343 + 50000344.

It is an arithmetic number, because the mean of its divisors is an integer number (50000344).

Almost surely, 2^100000687 is an apocalyptic number.

100000687 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000687 is an equidigital number, since it uses as much as digits as its factorization.

100000687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 100000687 is about 10000.0343499410. The cubic root of 100000687 is about 464.1599462827.

Adding to 100000687 its reverse (786000001), we get a palindrome (886000688).

The spelling of 100000687 in words is "one hundred million, six hundred eighty-seven", and thus it is an aban number.