681113 has 2 divisors, whose sum is σ = 681114. Its totient is φ = 681112.

The previous prime is 681091. The next prime is 681127. The reversal of 681113 is 311186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458329 + 222784 = 677^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 681113 - 2⁶ = 681049 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (681613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340556 + 340557.

It is an arithmetic number, because the mean of its divisors is an integer number (340557).

2⁶⁸¹¹¹³ is an apocalyptic number.

It is an amenable number.

681113 is a deficient number, since it is larger than the sum of its proper divisors (1).

681113 is an equidigital number, since it uses as much as digits as its factorization.

681113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

The square root of 681113 is about 825.2957045811. The cubic root of 681113 is about 87.9845444620.

Adding to 681113 its reverse (311186), we get a palindrome (992299).

The spelling of 681113 in words is "six hundred eighty-one thousand, one hundred thirteen".