6866890029 has 12 divisors (see below), whose sum is σ = 9921107196. Its totient is φ = 4576880832.

The previous prime is 6866890027. The next prime is 6866890033. The reversal of 6866890029 is 9200986686.

It can be written as a sum of positive squares in 2 ways, for example, as 5986581129 + 880308900 = 77373^2 + 29670^2 .

It is not a de Polignac number, because 6866890029 - 2¹ = 6866890027 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866890027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44472 + ... + 125345.

It is an arithmetic number, because the mean of its divisors is an integer number (826758933).

Almost surely, 2^6866890029 is an apocalyptic number.

It is an amenable number.

6866890029 is a deficient number, since it is larger than the sum of its proper divisors (3054217167).

6866890029 is a wasteful number, since it uses less digits than its factorization.

6866890029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174316 (or 174313 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 6866890029 is about 82866.7003626909. The cubic root of 6866890029 is about 1900.7282553634.

The spelling of 6866890029 in words is "six billion, eight hundred sixty-six million, eight hundred ninety thousand, twenty-nine".