196727691 has 8 divisors (see below), whose sum is σ = 276109120. Its totient is φ = 124249032.

The previous prime is 196727683. The next prime is 196727711.

It is a happy number.

196727691 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 196727691 - 2³ = 196727683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196727691.

It is not an unprimeable number, because it can be changed into a prime (196727681) 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, 1725625 + ... + 1725738.

It is an arithmetic number, because the mean of its divisors is an integer number (34513640).

Almost surely, 2^196727691 is an apocalyptic number.

196727691 is a deficient number, since it is larger than the sum of its proper divisors (79381429).

196727691 is a wasteful number, since it uses less digits than its factorization.

196727691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451385.

The product of its digits is 285768, while the sum is 48.

The square root of 196727691 is about 14025.9648865951. The cubic root of 196727691 is about 581.5965632635.

The spelling of 196727691 in words is "one hundred ninety-six million, seven hundred twenty-seven thousand, six hundred ninety-one".