681348686674 has 8 divisors (see below), whose sum is σ = 1025822372940. Its totient is φ = 339407895696.

The previous prime is 681348686657. The next prime is 681348686699. The reversal of 681348686674 is 476686843186.

It can be written as a sum of positive squares in 2 ways, for example, as 681273604449 + 75082225 = 825393^2 + 8665^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633223149 + ... + 633224224.

Almost surely, 2^681348686674 is an apocalyptic number.

681348686674 is a deficient number, since it is larger than the sum of its proper divisors (344473686266).

681348686674 is a wasteful number, since it uses less digits than its factorization.

681348686674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266447644.

The product of its digits is 222953472, while the sum is 67.

The spelling of 681348686674 in words is "six hundred eighty-one billion, three hundred forty-eight million, six hundred eighty-six thousand, six hundred seventy-four".