1685273 has 2 divisors, whose sum is σ = 1685274. Its totient is φ = 1685272.

The previous prime is 1685269. The next prime is 1685297. The reversal of 1685273 is 3725861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1315609 + 369664 = 1147^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 1685273 - 2² = 1685269 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1685473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842636 + 842637.

It is an arithmetic number, because the mean of its divisors is an integer number (842637).

2^1685273 is an apocalyptic number.

It is an amenable number.

1685273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685273 is an equidigital number, since it uses as much as digits as its factorization.

1685273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 1685273 is about 1298.1806499867. The cubic root of 1685273 is about 119.0026833658.

The spelling of 1685273 in words is "one million, six hundred eighty-five thousand, two hundred seventy-three".