681103 has 8 divisors (see below), whose sum is σ = 707616. Its totient is φ = 655200.

The previous prime is 681091. The next prime is 681113. The reversal of 681103 is 301186.

681103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3673 + ... + 3853.

It is an arithmetic number, because the mean of its divisors is an integer number (88452).

2⁶⁸¹¹⁰³ is an apocalyptic number.

681103 is a deficient number, since it is larger than the sum of its proper divisors (26513).

681103 is a wasteful number, since it uses less digits than its factorization.

681103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 681103 is about 825.2896461243. The cubic root of 681103 is about 87.9841138679.

Adding to 681103 its reverse (301186), we get a palindrome (982289).

It can be divided in two parts, 681 and 103, that added together give a square (784 = 28²).

The spelling of 681103 in words is "six hundred eighty-one thousand, one hundred three".