166429666 has 32 divisors (see below), whose sum is σ = 280949760. Its totient is φ = 73410624.

The previous prime is 166429661. The next prime is 166429667. The reversal of 166429666 is 666924661.

It is not an unprimeable number, because it can be changed into a prime (166429661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76591 + ... + 78733.

It is an arithmetic number, because the mean of its divisors is an integer number (8779680).

Almost surely, 2^166429666 is an apocalyptic number.

166429666 is a deficient number, since it is larger than the sum of its proper divisors (114520094).

166429666 is a wasteful number, since it uses less digits than its factorization.

166429666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290.

The product of its digits is 559872, while the sum is 46.

The square root of 166429666 is about 12900.7622255431. The cubic root of 166429666 is about 550.0602314202.

The spelling of 166429666 in words is "one hundred sixty-six million, four hundred twenty-nine thousand, six hundred sixty-six".