6866883729 has 32 divisors (see below), whose sum is σ = 11034334080. Its totient is φ = 4203532800.

The previous prime is 6866883719. The next prime is 6866883731. The reversal of 6866883729 is 9273886686.

6866883729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6866883729 - 2⁴ = 6866883713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6866883719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163627 + ... + 201264.

It is an arithmetic number, because the mean of its divisors is an integer number (344822940).

Almost surely, 2^6866883729 is an apocalyptic number.

It is an amenable number.

6866883729 is a deficient number, since it is larger than the sum of its proper divisors (4167450351).

6866883729 is a wasteful number, since it uses less digits than its factorization.

6866883729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364958 (or 364952 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The square root of 6866883729 is about 82866.6623498256. The cubic root of 6866883729 is about 1900.7276740914.

The spelling of 6866883729 in words is "six billion, eight hundred sixty-six million, eight hundred eighty-three thousand, seven hundred twenty-nine".