6840012 has 12 divisors (see below), whose sum is σ = 15960056. Its totient is φ = 2280000.

The previous prime is 6839983. The next prime is 6840013. The reversal of 6840012 is 2100486.

6840012 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6840013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284989 + ... + 285012.

Almost surely, 2^6840012 is an apocalyptic number.

It is an amenable number.

6840012 is an abundant number, since it is smaller than the sum of its proper divisors (9120044).

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

6840012 is a wasteful number, since it uses less digits than its factorization.

6840012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570008 (or 570006 counting only the distinct ones).

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

The square root of 6840012 is about 2615.3416602807. The cubic root of 6840012 is about 189.8245101689.

Adding to 6840012 its reverse (2100486), we get a palindrome (8940498).

The spelling of 6840012 in words is "six million, eight hundred forty thousand, twelve".