681830662 has 16 divisors (see below), whose sum is σ = 1084145472. Its totient is φ = 320494720.

The previous prime is 681830651. The next prime is 681830663. The reversal of 681830662 is 266038186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681830663) 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, 19968 + ... + 41980.

It is an arithmetic number, because the mean of its divisors is an integer number (67759092).

Almost surely, 2^681830662 is an apocalyptic number.

681830662 is a deficient number, since it is larger than the sum of its proper divisors (402314810).

681830662 is a wasteful number, since it uses less digits than its factorization.

681830662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22943.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 681830662 is about 26111.8873695488. The cubic root of 681830662 is about 880.1543556717.

The spelling of 681830662 in words is "six hundred eighty-one million, eight hundred thirty thousand, six hundred sixty-two".