1680337686 has 24 divisors (see below), whose sum is σ = 3444662952. Its totient is φ = 546448000.

The previous prime is 1680337679. The next prime is 1680337699. The reversal of 1680337686 is 6867330861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73215 + ... + 93386.

It is an arithmetic number, because the mean of its divisors is an integer number (143527623).

Almost surely, 2^1680337686 is an apocalyptic number.

1680337686 is an abundant number, since it is smaller than the sum of its proper divisors (1764325266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680337686 is a wasteful number, since it uses less digits than its factorization.

1680337686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166688 (or 166647 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 1680337686 is about 40991.9222042587. The cubic root of 1680337686 is about 1188.8640351860.

The spelling of 1680337686 in words is "one billion, six hundred eighty million, three hundred thirty-seven thousand, six hundred eighty-six".