867009 has 32 divisors (see below), whose sum is σ = 1419264. Its totient is φ = 463680.

The previous prime is 867007. The next prime is 867011. The reversal of 867009 is 900768.

It is a happy number.

867009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (867007) and next prime (867011).

It is not a de Polignac number, because 867009 - 2¹ = 867007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (867001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18424 + ... + 18470.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2⁸⁶⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

867009 is a deficient number, since it is larger than the sum of its proper divisors (552255).

867009 is a wasteful number, since it uses less digits than its factorization.

867009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 867009 is about 931.1331805923. The cubic root of 867009 is about 95.3545019037.

The spelling of 867009 in words is "eight hundred sixty-seven thousand, nine".