131664166 has 8 divisors (see below), whose sum is σ = 198600120. Its totient is φ = 65464128.

The previous prime is 131664163. The next prime is 131664173. The reversal of 131664166 is 661466131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131664163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183531 + ... + 184246.

It is an arithmetic number, because the mean of its divisors is an integer number (24825015).

Almost surely, 2^131664166 is an apocalyptic number.

131664166 is a deficient number, since it is larger than the sum of its proper divisors (66935954).

131664166 is a wasteful number, since it uses less digits than its factorization.

131664166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367958.

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

The square root of 131664166 is about 11474.5006863044. The cubic root of 131664166 is about 508.7321654609.

The spelling of 131664166 in words is "one hundred thirty-one million, six hundred sixty-four thousand, one hundred sixty-six".