116681 has 2 divisors, whose sum is σ = 116682. Its totient is φ = 116680.

The previous prime is 116663. The next prime is 116687. The reversal of 116681 is 186611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 400 = 341^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 116681 - 2¹⁰ = 115657 is a prime.

It is a super-2 number, since 2×116681² = 27228911522, which contains 22 as substring.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (116687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58340 + 58341.

It is an arithmetic number, because the mean of its divisors is an integer number (58341).

2¹¹⁶⁶⁸¹ is an apocalyptic number.

It is an amenable number.

116681 is a deficient number, since it is larger than the sum of its proper divisors (1).

116681 is an equidigital number, since it uses as much as digits as its factorization.

116681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 23.

The square root of 116681 is about 341.5860067392. The cubic root of 116681 is about 48.8652412800.

It can be divided in two parts, 116 and 681, that added together give a palindrome (797).

The spelling of 116681 in words is "one hundred sixteen thousand, six hundred eighty-one".