609867 has 6 divisors (see below), whose sum is σ = 880932. Its totient is φ = 406572.

The previous prime is 609859. The next prime is 609877. The reversal of 609867 is 768906.

609867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 609867 - 2³ = 609859 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 609867.

It is not an unprimeable number, because it can be changed into a prime (609877) 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, 33873 + ... + 33890.

It is an arithmetic number, because the mean of its divisors is an integer number (146822).

2⁶⁰⁹⁸⁶⁷ is an apocalyptic number.

609867 is a deficient number, since it is larger than the sum of its proper divisors (271065).

609867 is a wasteful number, since it uses less digits than its factorization.

609867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67769 (or 67766 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 609867 is about 780.9398184239. The cubic root of 609867 is about 84.8030967037.

The spelling of 609867 in words is "six hundred nine thousand, eight hundred sixty-seven".