6666867 has 10 divisors (see below), whose sum is σ = 9959268. Its totient is φ = 4444524.

The previous prime is 6666841. The next prime is 6666883. The reversal of 6666867 is 7686666.

It is a happy number.

It is not a de Polignac number, because 6666867 - 2¹⁰ = 6665843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6666167) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41073 + ... + 41234.

Almost surely, 2^6666867 is an apocalyptic number.

6666867 is a deficient number, since it is larger than the sum of its proper divisors (3292401).

6666867 is an equidigital number, since it uses as much as digits as its factorization.

6666867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82319 (or 82310 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 6666867 is about 2582.0276915634. The cubic root of 6666867 is about 188.2090909662.

The spelling of 6666867 in words is "six million, six hundred sixty-six thousand, eight hundred sixty-seven".