681799396 has 48 divisors (see below), whose sum is σ = 1293143040. Its totient is φ = 313568640.

The previous prime is 681799387. The next prime is 681799403. The reversal of 681799396 is 693997186.

681799396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 681799396.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122925 + ... + 1123531.

It is an arithmetic number, because the mean of its divisors is an integer number (26940480).

Almost surely, 2^681799396 is an apocalyptic number.

It is an amenable number.

681799396 is a deficient number, since it is larger than the sum of its proper divisors (611343644).

681799396 is a wasteful number, since it uses less digits than its factorization.

681799396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084 (or 1082 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 58.

The square root of 681799396 is about 26111.2886698455. The cubic root of 681799396 is about 880.1409020249.

The spelling of 681799396 in words is "six hundred eighty-one million, seven hundred ninety-nine thousand, three hundred ninety-six".