6667428211 has 8 divisors (see below), whose sum is σ = 6698366064. Its totient is φ = 6636542880.

The previous prime is 6667428139. The next prime is 6667428221. The reversal of 6667428211 is 1128247666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6667428211 - 2⁹ = 6667427699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6667428221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 253785 + ... + 278821.

It is an arithmetic number, because the mean of its divisors is an integer number (837295758).

Almost surely, 2^6667428211 is an apocalyptic number.

6667428211 is a deficient number, since it is larger than the sum of its proper divisors (30937853).

6667428211 is a wasteful number, since it uses less digits than its factorization.

6667428211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26261.

The product of its digits is 193536, while the sum is 43.

The square root of 6667428211 is about 81654.3214471837. The cubic root of 6667428211 is about 1882.1437190990.

The spelling of 6667428211 in words is "six billion, six hundred sixty-seven million, four hundred twenty-eight thousand, two hundred eleven".