6667001111 has 4 divisors (see below), whose sum is σ = 6667933392. Its totient is φ = 6666068832.

The previous prime is 6667001087. The next prime is 6667001137. The reversal of 6667001111 is 1111007666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6667001111 is a prime.

It is a super-3 number, since 3×6667001111³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667001141) 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 3 ways as a sum of consecutive naturals, for example, 455330 + ... + 469743.

It is an arithmetic number, because the mean of its divisors is an integer number (1666983348).

Almost surely, 2^6667001111 is an apocalyptic number.

6667001111 is a deficient number, since it is larger than the sum of its proper divisors (932281).

6667001111 is an equidigital number, since it uses as much as digits as its factorization.

6667001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932280.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 6667001111 is about 81651.7061119974. The cubic root of 6667001111 is about 1882.1035296525.

Adding to 6667001111 its reverse (1111007666), we get a palindrome (7778008777).

The spelling of 6667001111 in words is "six billion, six hundred sixty-seven million, one thousand, one hundred eleven".