1680336 has 60 divisors (see below), whose sum is σ = 5377632. Its totient is φ = 479808.

The previous prime is 1680323. The next prime is 1680359. The reversal of 1680336 is 6330861.

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, 175 + ... + 1841.

2^1680336 is an apocalyptic number.

1680336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1680336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2688816).

1680336 is an abundant number, since it is smaller than the sum of its proper divisors (3697296).

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

1680336 is a wasteful number, since it uses less digits than its factorization.

1680336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1680336 is about 1296.2777480154. The cubic root of 1680336 is about 118.8863637562.

It can be divided in two parts, 1680 and 336, that added together give a triangular number (2016 = T₆₃).

The spelling of 1680336 in words is "one million, six hundred eighty thousand, three hundred thirty-six".