6683986 has 4 divisors (see below), whose sum is σ = 10025982. Its totient is φ = 3341992.

The previous prime is 6683981. The next prime is 6683993. The reversal of 6683986 is 6893866.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 53361 = 2575^2 + 231^2 .

It is an Ulam 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 as a sum of consecutive naturals, namely, 1670995 + ... + 1670998.

Almost surely, 2^6683986 is an apocalyptic number.

6683986 is a deficient number, since it is larger than the sum of its proper divisors (3341996).

6683986 is a wasteful number, since it uses less digits than its factorization.

6683986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341995.

The product of its digits is 373248, while the sum is 46.

The square root of 6683986 is about 2585.3405965172. The cubic root of 6683986 is about 188.3700460099.

The spelling of 6683986 in words is "six million, six hundred eighty-three thousand, nine hundred eighty-six".