1686060 has 144 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 387072.

The previous prime is 1686049. The next prime is 1686067. The reversal of 1686060 is 606861.

It is not an unprimeable number, because it can be changed into a prime (1686067) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 58126 + ... + 58154.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2^1686060 is an apocalyptic number.

1686060 is a gapful number since it is divisible by the number (10) 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 1686060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2948400).

1686060 is an abundant number, since it is smaller than the sum of its proper divisors (4210740).

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

1686060 is a wasteful number, since it uses less digits than its factorization.

1686060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1686060 is about 1298.4837311264. The cubic root of 1686060 is about 119.0212047047.

The spelling of 1686060 in words is "one million, six hundred eighty-six thousand, sixty".