116689 has 2 divisors, whose sum is σ = 116690. Its totient is φ = 116688.

The previous prime is 116687. The next prime is 116707. The reversal of 116689 is 986611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115600 + 1089 = 340^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 116689 - 2¹ = 116687 is a prime.

Together with 116687, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 116689.

It is not a weakly prime, because it can be changed into another prime (116681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58344 + 58345.

It is an arithmetic number, because the mean of its divisors is an integer number (58345).

2¹¹⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

116689 is a deficient number, since it is larger than the sum of its proper divisors (1).

116689 is an equidigital number, since it uses as much as digits as its factorization.

116689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The square root of 116689 is about 341.5977166200. The cubic root of 116689 is about 48.8663580371.

The spelling of 116689 in words is "one hundred sixteen thousand, six hundred eighty-nine".