10869987 has 16 divisors (see below), whose sum is σ = 15472512. Its totient is φ = 6764160.

The previous prime is 10869979. The next prime is 10870003. The reversal of 10869987 is 78996801.

It is a happy number.

It is not a de Polignac number, because 10869987 - 2³ = 10869979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10869967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5868 + ... + 7494.

It is an arithmetic number, because the mean of its divisors is an integer number (967032).

Almost surely, 2^10869987 is an apocalyptic number.

10869987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

10869987 is a deficient number, since it is larger than the sum of its proper divisors (4602525).

10869987 is a wasteful number, since it uses less digits than its factorization.

10869987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 10869987 is about 3296.9663328581. The cubic root of 10869987 is about 221.5183331832.

The spelling of 10869987 in words is "ten million, eight hundred sixty-nine thousand, nine hundred eighty-seven".