864012 has 24 divisors (see below), whose sum is σ = 2041200. Its totient is φ = 284416.

The previous prime is 864011. The next prime is 864013. The reversal of 864012 is 210468.

864012 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 (864011) and next prime (864013).

It is a super-2 number, since 2×864012² = 1493033472288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 864012.

It is not an unprimeable number, because it can be changed into a prime (864011) 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, 664 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2⁸⁶⁴⁰¹² is an apocalyptic number.

It is an amenable number.

864012 is an abundant number, since it is smaller than the sum of its proper divisors (1177188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864012 is a wasteful number, since it uses less digits than its factorization.

864012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 864012 is about 929.5224580396. The cubic root of 864012 is about 95.2445040608.

The spelling of 864012 in words is "eight hundred sixty-four thousand, twelve".