683328681 has 24 divisors (see below), whose sum is σ = 1130975040. Its totient is φ = 389455776.

The previous prime is 683328641. The next prime is 683328703. The reversal of 683328681 is 186823386.

It is not a de Polignac number, because 683328681 - 2⁷ = 683328553 is a prime.

It is a super-2 number, since 2×683328681² = 933876172554399522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (683328631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10566 + ... + 38448.

It is an arithmetic number, because the mean of its divisors is an integer number (47123960).

Almost surely, 2^683328681 is an apocalyptic number.

It is an amenable number.

683328681 is a deficient number, since it is larger than the sum of its proper divisors (447646359).

683328681 is a wasteful number, since it uses less digits than its factorization.

683328681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28285 (or 28282 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 683328681 is about 26140.5562488636. The cubic root of 683328681 is about 880.7984664955.

The spelling of 683328681 in words is "six hundred eighty-three million, three hundred twenty-eight thousand, six hundred eighty-one".