1686048 has 96 divisors (see below), whose sum is σ = 5475456. Its totient is φ = 442368.

The previous prime is 1686029. The next prime is 1686049. The reversal of 1686048 is 8406861.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1686049) 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, 8640 + ... + 8832.

It is an arithmetic number, because the mean of its divisors is an integer number (57036).

2^1686048 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 1686048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737728).

1686048 is an abundant number, since it is smaller than the sum of its proper divisors (3789408).

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

1686048 is a wasteful number, since it uses less digits than its factorization.

1686048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1686048 is about 1298.4791103441. The cubic root of 1686048 is about 119.0209223387.

It can be divided in two parts, 168 and 6048, that multiplied together give a square (1016064 = 1008²).

The spelling of 1686048 in words is "one million, six hundred eighty-six thousand, forty-eight".