166666411 has 8 divisors (see below), whose sum is σ = 167803200. Its totient is φ = 165533760.

The previous prime is 166666403. The next prime is 166666417. The reversal of 166666411 is 114666661.

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 166666411 - 2³ = 166666403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166666417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128655 + ... + 129943.

It is an arithmetic number, because the mean of its divisors is an integer number (20975400).

Almost surely, 2^166666411 is an apocalyptic number.

166666411 is a deficient number, since it is larger than the sum of its proper divisors (1136789).

166666411 is a wasteful number, since it uses less digits than its factorization.

166666411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its digits is 31104, while the sum is 37.

The square root of 166666411 is about 12909.9345854268. The cubic root of 166666411 is about 550.3209267514.

The spelling of 166666411 in words is "one hundred sixty-six million, six hundred sixty-six thousand, four hundred eleven".