867987 has 6 divisors (see below), whose sum is σ = 1253772. Its totient is φ = 578652.

The previous prime is 867959. The next prime is 867991. The reversal of 867987 is 789768.

It is not a de Polignac number, because 867987 - 2¹⁰ = 866963 is a prime.

867987 is a lucky number.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 867987.

It is not an unprimeable number, because it can be changed into a prime (867947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48213 + ... + 48230.

It is an arithmetic number, because the mean of its divisors is an integer number (208962).

2⁸⁶⁷⁹⁸⁷ is an apocalyptic number.

867987 is a deficient number, since it is larger than the sum of its proper divisors (385785).

867987 is a wasteful number, since it uses less digits than its factorization.

867987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96449 (or 96446 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 867987 is about 931.6581991267. The cubic root of 867987 is about 95.3903422313.

The spelling of 867987 in words is "eight hundred sixty-seven thousand, nine hundred eighty-seven".