681110003 has 8 divisors (see below), whose sum is σ = 784354560. Its totient is φ = 579351240.

The previous prime is 681109939. The next prime is 681110033. The reversal of 681110003 is 300011186.

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

It is a cyclic number.

It is not a de Polignac number, because 681110003 - 2⁶ = 681109939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681110033) 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, 370463 + ... + 372296.

It is an arithmetic number, because the mean of its divisors is an integer number (98044320).

Almost surely, 2^681110003 is an apocalyptic number.

681110003 is a deficient number, since it is larger than the sum of its proper divisors (103244557).

681110003 is a wasteful number, since it uses less digits than its factorization.

681110003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742897.

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

The square root of 681110003 is about 26098.0842783527. The cubic root of 681110003 is about 879.8441541338.

Adding to 681110003 its reverse (300011186), we get a palindrome (981121189).

The spelling of 681110003 in words is "six hundred eighty-one million, one hundred ten thousand, three".