864867 has 8 divisors (see below), whose sum is σ = 1193040. Its totient is φ = 556640.

The previous prime is 864817. The next prime is 864883. The reversal of 864867 is 768468.

864867 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 a cyclic number.

It is not a de Polignac number, because 864867 - 2⁶ = 864803 is a prime.

864867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (864817) 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, 4884 + ... + 5057.

It is an arithmetic number, because the mean of its divisors is an integer number (149130).

2⁸⁶⁴⁸⁶⁷ is an apocalyptic number.

864867 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

864867 is a deficient number, since it is larger than the sum of its proper divisors (328173).

864867 is a wasteful number, since it uses less digits than its factorization.

864867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its digits is 64512, while the sum is 39.

The square root of 864867 is about 929.9822578953. The cubic root of 864867 is about 95.2759107250.

The spelling of 864867 in words is "eight hundred sixty-four thousand, eight hundred sixty-seven".