6663683 has 4 divisors (see below), whose sum is σ = 7176288. Its totient is φ = 6151080.

The previous prime is 6663673. The next prime is 6663731. The reversal of 6663683 is 3863666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3863666 = 2 ⋅1931833.

It is not a de Polignac number, because 6663683 - 2²⁰ = 5615107 is a prime.

It is a super-2 number, since 2×6663683² = 88809342248978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6663653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256283 + ... + 256308.

It is an arithmetic number, because the mean of its divisors is an integer number (1794072).

Almost surely, 2^6663683 is an apocalyptic number.

6663683 is a deficient number, since it is larger than the sum of its proper divisors (512605).

6663683 is a wasteful number, since it uses less digits than its factorization.

6663683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512604.

The product of its digits is 93312, while the sum is 38.

The square root of 6663683 is about 2581.4110482447. The cubic root of 6663683 is about 188.1791242082.

The spelling of 6663683 in words is "six million, six hundred sixty-three thousand, six hundred eighty-three".