131677666 has 8 divisors (see below), whose sum is σ = 197615340. Its totient is φ = 65805888.

The previous prime is 131677649. The next prime is 131677673. The reversal of 131677666 is 666776131.

131677666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 130530625 + 1147041 = 11425^2 + 1071^2 .

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

It is an unprimeable number.

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, 11131 + ... + 19678.

Almost surely, 2^131677666 is an apocalyptic number.

131677666 is a deficient number, since it is larger than the sum of its proper divisors (65937674).

131677666 is a wasteful number, since it uses less digits than its factorization.

131677666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32948.

The product of its digits is 190512, while the sum is 43.

The square root of 131677666 is about 11475.0889321173. The cubic root of 131677666 is about 508.7495522456.

The spelling of 131677666 in words is "one hundred thirty-one million, six hundred seventy-seven thousand, six hundred sixty-six".