6667221876 has 72 divisors (see below), whose sum is σ = 18586002624. Its totient is φ = 1822085760.

The previous prime is 6667221851. The next prime is 6667221889. The reversal of 6667221876 is 6781227666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30585 + ... + 119456.

Almost surely, 2^6667221876 is an apocalyptic number.

It is an amenable number.

6667221876 is an abundant number, since it is smaller than the sum of its proper divisors (11918780748).

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

6667221876 is a wasteful number, since it uses less digits than its factorization.

6667221876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150101 (or 150076 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 6667221876 is about 81653.0579709052. The cubic root of 6667221876 is about 1882.1243035103.

The spelling of 6667221876 in words is "six billion, six hundred sixty-seven million, two hundred twenty-one thousand, eight hundred seventy-six".