681340006740 has 24 divisors (see below), whose sum is σ = 1907752019040. Its totient is φ = 181690668448.

The previous prime is 681340006703. The next prime is 681340006741. The reversal of 681340006740 is 47600043186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681340006741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5677833330 + ... + 5677833449.

It is an arithmetic number, because the mean of its divisors is an integer number (79489667460).

Almost surely, 2^681340006740 is an apocalyptic number.

681340006740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

681340006740 is an abundant number, since it is smaller than the sum of its proper divisors (1226412012300).

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

681340006740 is a wasteful number, since it uses less digits than its factorization.

681340006740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11355666791 (or 11355666789 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 681340006740 in words is "six hundred eighty-one billion, three hundred forty million, six thousand, seven hundred forty".