6866668873 has 4 divisors (see below), whose sum is σ = 6869050240. Its totient is φ = 6864287508.

The previous prime is 6866668859. The next prime is 6866668903. The reversal of 6866668873 is 3788666686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6866668873 is a prime.

It is a super-2 number, since 2×6866668873² = 94302282822854180258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6866668573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186353 + ... + 1192126.

It is an arithmetic number, because the mean of its divisors is an integer number (1717262560).

Almost surely, 2^6866668873 is an apocalyptic number.

It is an amenable number.

6866668873 is a deficient number, since it is larger than the sum of its proper divisors (2381367).

6866668873 is a wasteful number, since it uses less digits than its factorization.

6866668873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381366.

The product of its digits is 83607552, while the sum is 64.

The square root of 6866668873 is about 82865.3659438007. The cubic root of 6866668873 is about 1900.7078501062.

The spelling of 6866668873 in words is "six billion, eight hundred sixty-six million, six hundred sixty-eight thousand, eight hundred seventy-three".