1685323 has 2 divisors, whose sum is σ = 1685324. Its totient is φ = 1685322.

The previous prime is 1685317. The next prime is 1685381. The reversal of 1685323 is 3235861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1685323 is a prime.

It is a super-2 number, since 2×1685323² = 5680627228658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1685291 and 1685300.

It is not a weakly prime, because it can be changed into another prime (1685423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842661 + 842662.

It is an arithmetic number, because the mean of its divisors is an integer number (842662).

2^1685323 is an apocalyptic number.

1685323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685323 is an equidigital number, since it uses as much as digits as its factorization.

1685323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 1685323 is about 1298.1999075643. The cubic root of 1685323 is about 119.0038602425.

The spelling of 1685323 in words is "one million, six hundred eighty-five thousand, three hundred twenty-three".