6667222788 has 36 divisors (see below), whose sum is σ = 17211841920. Its totient is φ = 2175121776.

The previous prime is 6667222739. The next prime is 6667222801. The reversal of 6667222788 is 8872227666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1968528 + ... + 1971911.

It is an arithmetic number, because the mean of its divisors is an integer number (478106720).

Almost surely, 2^6667222788 is an apocalyptic number.

It is an amenable number.

6667222788 is an abundant number, since it is smaller than the sum of its proper divisors (10544619132).

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

6667222788 is a wasteful number, since it uses less digits than its factorization.

6667222788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940496 (or 3940491 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 6667222788 is about 81653.0635555090. The cubic root of 6667222788 is about 1882.1243893281.

The spelling of 6667222788 in words is "six billion, six hundred sixty-seven million, two hundred twenty-two thousand, seven hundred eighty-eight".