116691 has 8 divisors (see below), whose sum is σ = 157584. Its totient is φ = 76800.

The previous prime is 116689. The next prime is 116707. The reversal of 116691 is 196611.

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

It is not a de Polignac number, because 116691 - 2¹ = 116689 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (116681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91 + ... + 491.

It is an arithmetic number, because the mean of its divisors is an integer number (19698).

2¹¹⁶⁶⁹¹ is an apocalyptic number.

116691 is a deficient number, since it is larger than the sum of its proper divisors (40893).

116691 is an equidigital number, since it uses as much as digits as its factorization.

116691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its digits is 324, while the sum is 24.

The square root of 116691 is about 341.6006440275. The cubic root of 116691 is about 48.8666372184.

The spelling of 116691 in words is "one hundred sixteen thousand, six hundred ninety-one".