6868557693 has 24 divisors (see below), whose sum is σ = 10290309120. Its totient is φ = 4409532960.

The previous prime is 6868557671. The next prime is 6868557697. The reversal of 6868557693 is 3967558686.

It is not a de Polignac number, because 6868557693 - 2¹² = 6868553597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6868557693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868557697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65608 + ... + 134318.

It is an arithmetic number, because the mean of its divisors is an integer number (428762880).

Almost surely, 2^6868557693 is an apocalyptic number.

It is an amenable number.

6868557693 is a deficient number, since it is larger than the sum of its proper divisors (3421751427).

6868557693 is a wasteful number, since it uses less digits than its factorization.

6868557693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69129 (or 69126 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The square root of 6868557693 is about 82876.7620808149. The cubic root of 6868557693 is about 1900.8821105296.

The spelling of 6868557693 in words is "six billion, eight hundred sixty-eight million, five hundred fifty-seven thousand, six hundred ninety-three".