1680308 has 18 divisors (see below), whose sum is σ = 3421026. Its totient is φ = 720048.

The previous prime is 1680277. The next prime is 1680313. The reversal of 1680308 is 8030861.

It can be written as a sum of positive squares in only one way, i.e., 1317904 + 362404 = 1148^2 + 602^2 .

1680308 is a modest number, since divided by 308 gives 168 as remainder.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 4091 + ... + 4482.

It is an arithmetic number, because the mean of its divisors is an integer number (190057).

2^1680308 is an apocalyptic number.

It is an amenable number.

1680308 is an abundant number, since it is smaller than the sum of its proper divisors (1740718).

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

1680308 is a wasteful number, since it uses less digits than its factorization.

1680308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8591 (or 8582 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1680308 is about 1296.2669478159. The cubic root of 1680308 is about 118.8857034048.

The spelling of 1680308 in words is "one million, six hundred eighty thousand, three hundred eight".