6543012 has 24 divisors (see below), whose sum is σ = 17448256. Its totient is φ = 1869408.

The previous prime is 6543007. The next prime is 6543029. The reversal of 6543012 is 2103456.

It is a happy number.

It is a super-2 number, since 2×6543012² = 85622012064288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 6543012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38863 + ... + 39030.

Almost surely, 2^6543012 is an apocalyptic number.

It is an amenable number.

6543012 is an abundant number, since it is smaller than the sum of its proper divisors (10905244).

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

6543012 is a wasteful number, since it uses less digits than its factorization.

6543012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77907 (or 77905 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 6543012 is about 2557.9311953217. The cubic root of 6543012 is about 187.0363013019.

Adding to 6543012 its reverse (2103456), we get a palindrome (8646468).

The spelling of 6543012 in words is "six million, five hundred forty-three thousand, twelve".