6868989 has 8 divisors (see below), whose sum is σ = 10176320. Its totient is φ = 4579308.

The previous prime is 6868987. The next prime is 6868991. The reversal of 6868989 is 9898686.

6868989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6868987) and next prime (6868991).

It is not a de Polignac number, because 6868989 - 2¹ = 6868987 is a prime.

6868989 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127177 + ... + 127230.

It is an arithmetic number, because the mean of its divisors is an integer number (1272040).

Almost surely, 2^6868989 is an apocalyptic number.

It is an amenable number.

6868989 is a deficient number, since it is larger than the sum of its proper divisors (3307331).

6868989 is a wasteful number, since it uses less digits than its factorization.

6868989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254416 (or 254410 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 6868989 is about 2620.8756170410. The cubic root of 6868989 is about 190.0921897951.

The spelling of 6868989 in words is "six million, eight hundred sixty-eight thousand, nine hundred eighty-nine".