6667568212 has 12 divisors (see below), whose sum is σ = 11675247220. Its totient is φ = 3331783296.

The previous prime is 6667568203. The next prime is 6667568221. The reversal of 6667568212 is 2128657666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6667568203) and next prime (6667568221).

It can be written as a sum of positive squares in 2 ways, for example, as 2719205316 + 3948362896 = 52146^2 + 62836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492693 + ... + 506044.

Almost surely, 2^6667568212 is an apocalyptic number.

It is an amenable number.

6667568212 is a deficient number, since it is larger than the sum of its proper divisors (5007679008).

6667568212 is a wasteful number, since it uses less digits than its factorization.

6667568212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000410 (or 1000408 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 6667568212 is about 81655.1787212544. The cubic root of 6667568212 is about 1882.1568926021.

The spelling of 6667568212 in words is "six billion, six hundred sixty-seven million, five hundred sixty-eight thousand, two hundred twelve".