10887987 has 16 divisors (see below), whose sum is σ = 16207488. Its totient is φ = 6444480.

The previous prime is 10887983. The next prime is 10887997. The reversal of 10887987 is 78978801.

It is not a de Polignac number, because 10887987 - 2² = 10887983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10887983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2418 + ... + 5255.

It is an arithmetic number, because the mean of its divisors is an integer number (1012968).

Almost surely, 2^10887987 is an apocalyptic number.

10887987 is a deficient number, since it is larger than the sum of its proper divisors (5319501).

10887987 is a wasteful number, since it uses less digits than its factorization.

10887987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7730.

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 10887987 is about 3299.6949859040. The cubic root of 10887987 is about 221.6405391282.

The spelling of 10887987 in words is "ten million, eight hundred eighty-seven thousand, nine hundred eighty-seven".