1686113 has 12 divisors (see below), whose sum is σ = 1993968. Its totient is φ = 1413360.

The previous prime is 1686109. The next prime is 1686119. The reversal of 1686113 is 3116861.

It is not a de Polignac number, because 1686113 - 2² = 1686109 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1686119) 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 11 ways as a sum of consecutive naturals, for example, 1406 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (166164).

2^1686113 is an apocalyptic number.

1686113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1686113 is a deficient number, since it is larger than the sum of its proper divisors (307855).

1686113 is a wasteful number, since it uses less digits than its factorization.

1686113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 931 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 1686113 is about 1298.5041393850. The cubic root of 1686113 is about 119.0224518050.

The spelling of 1686113 in words is "one million, six hundred eighty-six thousand, one hundred thirteen".