6681029812 has 36 divisors (see below), whose sum is σ = 12436677120. Its totient is φ = 3131737344.

The previous prime is 6681029807. The next prime is 6681029863. The reversal of 6681029812 is 2189201866.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 710413 + ... + 719755.

Almost surely, 2^6681029812 is an apocalyptic number.

It is an amenable number.

6681029812 is a deficient number, since it is larger than the sum of its proper divisors (5755647308).

6681029812 is a wasteful number, since it uses less digits than its factorization.

6681029812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560 (or 9461 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 6681029812 is about 81737.5667120083. The cubic root of 6681029812 is about 1883.4227119685.

The spelling of 6681029812 in words is "six billion, six hundred eighty-one million, twenty-nine thousand, eight hundred twelve".