196679666 has 16 divisors (see below), whose sum is σ = 301274424. Its totient is φ = 96274944.

The previous prime is 196679629. The next prime is 196679669. The reversal of 196679666 is 666976691.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 178997641 + 17682025 = 13379^2 + 4205^2 .

It is not an unprimeable number, because it can be changed into a prime (196679669) 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 7 ways as a sum of consecutive naturals, for example, 15086 + ... + 24918.

Almost surely, 2^196679666 is an apocalyptic number.

196679666 is a deficient number, since it is larger than the sum of its proper divisors (104594758).

196679666 is a wasteful number, since it uses less digits than its factorization.

196679666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045.

The product of its digits is 4408992, while the sum is 56.

The square root of 196679666 is about 14024.2527786688. The cubic root of 196679666 is about 581.5492331224.

The spelling of 196679666 in words is "one hundred ninety-six million, six hundred seventy-nine thousand, six hundred sixty-six".