1680664683 has 6 divisors (see below), whose sum is σ = 2240980924. Its totient is φ = 1120395784.

The previous prime is 1680664673. The next prime is 1680664691. The reversal of 1680664683 is 3864660861.

It is not a de Polignac number, because 1680664683 - 2¹⁶ = 1680599147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680664633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59173 + ... + 82841.

Almost surely, 2^1680664683 is an apocalyptic number.

1680664683 is a deficient number, since it is larger than the sum of its proper divisors (560316241).

1680664683 is an frugal number, since it uses more digits than its factorization.

1680664683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47341 (or 23672 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 1680664683 is about 40995.9105643478. The cubic root of 1680664683 is about 1188.9411486062.

Multiplying 1680664683 by its sum of digits (48), we get a square (80671904784 = 284028²).

The spelling of 1680664683 in words is "one billion, six hundred eighty million, six hundred sixty-four thousand, six hundred eighty-three".