6683989 has 16 divisors (see below), whose sum is σ = 7484400. Its totient is φ = 5930496.

The previous prime is 6683981. The next prime is 6683993. The reversal of 6683989 is 9893866.

It can be written as a sum of positive squares in 8 ways, for example, as 140625 + 6543364 = 375^2 + 2558^2 .

It is not a de Polignac number, because 6683989 - 2³ = 6683981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6683981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61267 + ... + 61375.

It is an arithmetic number, because the mean of its divisors is an integer number (467775).

Almost surely, 2^6683989 is an apocalyptic number.

It is an amenable number.

6683989 is a deficient number, since it is larger than the sum of its proper divisors (800411).

6683989 is a wasteful number, since it uses less digits than its factorization.

6683989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its digits is 559872, while the sum is 49.

The square root of 6683989 is about 2585.3411767115. The cubic root of 6683989 is about 188.3700741922.

The spelling of 6683989 in words is "six million, six hundred eighty-three thousand, nine hundred eighty-nine".