6667864279 has 8 divisors (see below), whose sum is σ = 6679008288. Its totient is φ = 6656732160.

The previous prime is 6667864271. The next prime is 6667864297. The reversal of 6667864279 is 9724687666.

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 6667864279 - 2³ = 6667864271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667864271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2308174 + ... + 2311060.

It is an arithmetic number, because the mean of its divisors is an integer number (834876036).

Almost surely, 2^6667864279 is an apocalyptic number.

6667864279 is a deficient number, since it is larger than the sum of its proper divisors (11144009).

6667864279 is a wasteful number, since it uses less digits than its factorization.

6667864279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945.

The product of its digits is 36578304, while the sum is 61.

The square root of 6667864279 is about 81656.9916112515. The cubic root of 6667864279 is about 1882.1847506496.

The spelling of 6667864279 in words is "six billion, six hundred sixty-seven million, eight hundred sixty-four thousand, two hundred seventy-nine".