10687987 has 2 divisors, whose sum is σ = 10687988. Its totient is φ = 10687986.

The previous prime is 10687967. The next prime is 10687991. The reversal of 10687987 is 78978601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10687987 is a prime.

It is a super-2 number, since 2×10687987² = 228466132224338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10687967) 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, 5343993 + 5343994.

It is an arithmetic number, because the mean of its divisors is an integer number (5343994).

Almost surely, 2^10687987 is an apocalyptic number.

10687987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10687987 is an equidigital number, since it uses as much as digits as its factorization.

10687987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 10687987 is about 3269.2486904486. The cubic root of 10687987 is about 220.2750485473.

The spelling of 10687987 in words is "ten million, six hundred eighty-seven thousand, nine hundred eighty-seven".