1685923 has 6 divisors (see below), whose sum is σ = 1762964. Its totient is φ = 1612116.

The previous prime is 1685917. The next prime is 1685933. The reversal of 1685923 is 3295861.

It is a de Polignac number, because none of the positive numbers 2^k-1685923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1685933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1065 + ... + 2122.

2^1685923 is an apocalyptic number.

1685923 is a deficient number, since it is larger than the sum of its proper divisors (77041).

1685923 is an equidigital number, since it uses as much as digits as its factorization.

1685923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233 (or 3210 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 1685923 is about 1298.4309762171. The cubic root of 1685923 is about 119.0179809470.

The spelling of 1685923 in words is "one million, six hundred eighty-five thousand, nine hundred twenty-three".