1680615716 has 48 divisors (see below), whose sum is σ = 3378349296. Its totient is φ = 724660224.

The previous prime is 1680615701. The next prime is 1680615749. The reversal of 1680615716 is 6175160861.

It can be written as a sum of positive squares in 8 ways, for example, as 109286116 + 1571329600 = 10454^2 + 39640^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 114170 + ... + 128046.

It is an arithmetic number, because the mean of its divisors is an integer number (70382277).

Almost surely, 2^1680615716 is an apocalyptic number.

It is an amenable number.

1680615716 is an abundant number, since it is smaller than the sum of its proper divisors (1697733580).

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

1680615716 is a wasteful number, since it uses less digits than its factorization.

1680615716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14048 (or 14046 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 1680615716 is about 40995.3133418931. The cubic root of 1680615716 is about 1188.9296016971.

The spelling of 1680615716 in words is "one billion, six hundred eighty million, six hundred fifteen thousand, seven hundred sixteen".