1683533666 has 8 divisors (see below), whose sum is σ = 2526018384. Its totient is φ = 841527540.

The previous prime is 1683533659. The next prime is 1683533669. The reversal of 1683533666 is 6663353861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1683533666.

It is not an unprimeable number, because it can be changed into a prime (1683533669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110720 + ... + 125003.

It is an arithmetic number, because the mean of its divisors is an integer number (315752298).

Almost surely, 2^1683533666 is an apocalyptic number.

1683533666 is a deficient number, since it is larger than the sum of its proper divisors (842484718).

1683533666 is a wasteful number, since it uses less digits than its factorization.

1683533666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239296.

The product of its digits is 1399680, while the sum is 47.

The square root of 1683533666 is about 41030.8867318268. The cubic root of 1683533666 is about 1189.6172923700.

The spelling of 1683533666 in words is "one billion, six hundred eighty-three million, five hundred thirty-three thousand, six hundred sixty-six".