681963796 has 24 divisors (see below), whose sum is σ = 1221534720. Its totient is φ = 332986272.

The previous prime is 681963791. The next prime is 681963803. The reversal of 681963796 is 697369186.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681963791) 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, 86266 + ... + 93838.

It is an arithmetic number, because the mean of its divisors is an integer number (50897280).

Almost surely, 2^681963796 is an apocalyptic number.

It is an amenable number.

681963796 is a deficient number, since it is larger than the sum of its proper divisors (539570924).

681963796 is a wasteful number, since it uses less digits than its factorization.

681963796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103 (or 8101 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The square root of 681963796 is about 26114.4365437970. The cubic root of 681963796 is about 880.2116381470.

The spelling of 681963796 in words is "six hundred eighty-one million, nine hundred sixty-three thousand, seven hundred ninety-six".