681059742 has 16 divisors (see below), whose sum is σ = 1485948672. Its totient is φ = 206381720.

The previous prime is 681059723. The next prime is 681059747. The reversal of 681059742 is 247950186.

It is a junction number, because it is equal to n+sod(n) for n = 681059694 and 681059703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681059747) 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, 5159478 + ... + 5159609.

It is an arithmetic number, because the mean of its divisors is an integer number (92871792).

Almost surely, 2^681059742 is an apocalyptic number.

681059742 is an abundant number, since it is smaller than the sum of its proper divisors (804888930).

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

681059742 is a wasteful number, since it uses less digits than its factorization.

681059742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319103.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 681059742 is about 26097.1213355037. The cubic root of 681059742 is about 879.8225115530.

The spelling of 681059742 in words is "six hundred eighty-one million, fifty-nine thousand, seven hundred forty-two".