6869021688 has 24 divisors (see below), whose sum is σ = 18603600600. Its totient is φ = 2289673872.

The previous prime is 6869021681. The next prime is 6869021689. The reversal of 6869021688 is 8861209686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6869021681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47701468 + ... + 47701611.

It is an arithmetic number, because the mean of its divisors is an integer number (775150025).

Almost surely, 2^6869021688 is an apocalyptic number.

It is an amenable number.

6869021688 is an abundant number, since it is smaller than the sum of its proper divisors (11734578912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6869021688 is a wasteful number, since it uses less digits than its factorization.

6869021688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95403091 (or 95403084 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 6869021688 is about 82879.5613405380. The cubic root of 6869021688 is about 1900.9249133020.

The spelling of 6869021688 in words is "six billion, eight hundred sixty-nine million, twenty-one thousand, six hundred eighty-eight".