1680666327 has 60 divisors (see below), whose sum is σ = 2671702264. Its totient is φ = 1052520480.

The previous prime is 1680666293. The next prime is 1680666341. The reversal of 1680666327 is 7236660861.

It is not a de Polignac number, because 1680666327 - 2¹⁰ = 1680665303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680666397) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2613468 + ... + 2614110.

Almost surely, 2^1680666327 is an apocalyptic number.

1680666327 is a deficient number, since it is larger than the sum of its proper divisors (991035937).

1680666327 is an equidigital number, since it uses as much as digits as its factorization.

1680666327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1680666327 is about 40995.9306151233. The cubic root of 1680666327 is about 1188.9415362739.

The spelling of 1680666327 in words is "one billion, six hundred eighty million, six hundred sixty-six thousand, three hundred twenty-seven".