681068514 has 16 divisors (see below), whose sum is σ = 1556728128. Its totient is φ = 194590992.

The previous prime is 681068513. The next prime is 681068527. The reversal of 681068514 is 415860186.

It is not an unprimeable number, because it can be changed into a prime (681068513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8107917 + ... + 8108000.

It is an arithmetic number, because the mean of its divisors is an integer number (97295508).

Almost surely, 2^681068514 is an apocalyptic number.

681068514 is an abundant number, since it is smaller than the sum of its proper divisors (875659614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681068514 is a wasteful number, since it uses less digits than its factorization.

681068514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16215929.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 681068514 is about 26097.2893994760. The cubic root of 681068514 is about 879.8262888868.

The spelling of 681068514 in words is "six hundred eighty-one million, sixty-eight thousand, five hundred fourteen".