166631146 has 8 divisors (see below), whose sum is σ = 272669184. Its totient is φ = 75741420.

The previous prime is 166631141. The next prime is 166631147. The reversal of 166631146 is 641136661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (166631141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787050 + ... + 3787093.

It is an arithmetic number, because the mean of its divisors is an integer number (34083648).

Almost surely, 2^166631146 is an apocalyptic number.

166631146 is a deficient number, since it is larger than the sum of its proper divisors (106038038).

166631146 is a wasteful number, since it uses less digits than its factorization.

166631146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574156.

The product of its digits is 15552, while the sum is 34.

The square root of 166631146 is about 12908.5687045466. The cubic root of 166631146 is about 550.2821098190.

The spelling of 166631146 in words is "one hundred sixty-six million, six hundred thirty-one thousand, one hundred forty-six".