10865987 has 8 divisors (see below), whose sum is σ = 11880432. Its totient is φ = 9856000.

The previous prime is 10865983. The next prime is 10865999. The reversal of 10865987 is 78956801.

It is a happy number.

10865987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10865987 - 2² = 10865983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10865983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5987 + ... + 7587.

It is an arithmetic number, because the mean of its divisors is an integer number (1485054).

Almost surely, 2^10865987 is an apocalyptic number.

10865987 is a deficient number, since it is larger than the sum of its proper divisors (1014445).

10865987 is a wasteful number, since it uses less digits than its factorization.

10865987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 10865987 is about 3296.3596587751. The cubic root of 10865987 is about 221.4911579884.

The spelling of 10865987 in words is "ten million, eight hundred sixty-five thousand, nine hundred eighty-seven".