6366666 has 16 divisors (see below), whose sum is σ = 13029984. Its totient is φ = 2072784.

The previous prime is 6366649. The next prime is 6366671. The reversal of 6366666 is 6666636.

It is a nude number because it is divisible by every one of its digits.

6366666 is a modest number, since divided by 6666 gives 636 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12081 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (814374).

Almost surely, 2^6366666 is an apocalyptic number.

6366666 is an abundant number, since it is smaller than the sum of its proper divisors (6663318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6366666 is a wasteful number, since it uses less digits than its factorization.

6366666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24725.

The product of its digits is 139968, while the sum is 39.

The square root of 6366666 is about 2523.2253169307. The cubic root of 6366666 is about 185.3406530875.

The spelling of 6366666 in words is "six million, three hundred sixty-six thousand, six hundred sixty-six".