166666414 has 4 divisors (see below), whose sum is σ = 249999624. Its totient is φ = 83333206.

The previous prime is 166666403. The next prime is 166666417. The reversal of 166666414 is 414666661.

It is a semiprime because it is the product of two primes.

It is a congruent 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 as a sum of consecutive naturals, namely, 41666602 + ... + 41666605.

It is an arithmetic number, because the mean of its divisors is an integer number (62499906).

Almost surely, 2^166666414 is an apocalyptic number.

166666414 is a deficient number, since it is larger than the sum of its proper divisors (83333210).

166666414 is an equidigital number, since it uses as much as digits as its factorization.

166666414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83333209.

The product of its digits is 124416, while the sum is 40.

The square root of 166666414 is about 12909.9347016164. The cubic root of 166666414 is about 550.3209300533.

The spelling of 166666414 in words is "one hundred sixty-six million, six hundred sixty-six thousand, four hundred fourteen".