1680696 has 64 divisors (see below), whose sum is σ = 4838400. Its totient is φ = 540000.

The previous prime is 1680689. The next prime is 1680697. The reversal of 1680696 is 6960861.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1680696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6571 + ... + 6821.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^1680696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1680696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2419200).

1680696 is an abundant number, since it is smaller than the sum of its proper divisors (3157704).

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

1680696 is a wasteful number, since it uses less digits than its factorization.

1680696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1680696 is about 1296.4165997086. The cubic root of 1680696 is about 118.8948533351.

The spelling of 1680696 in words is "one million, six hundred eighty thousand, six hundred ninety-six".