340785 has 12 divisors (see below), whose sum is σ = 590772. Its totient is φ = 181728.

The previous prime is 340777. The next prime is 340787. The reversal of 340785 is 587043.

It can be written as a sum of positive squares in 2 ways, for example, as 266256 + 74529 = 516^2 + 273^2 .

It is not a de Polignac number, because 340785 - 2³ = 340777 is a prime.

It is a super-2 number, since 2×340785² = 232268832450, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3742 + ... + 3831.

It is an arithmetic number, because the mean of its divisors is an integer number (49231).

2³⁴⁰⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

340785 is a deficient number, since it is larger than the sum of its proper divisors (249987).

340785 is a wasteful number, since it uses less digits than its factorization.

340785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7584 (or 7581 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 340785 is about 583.7679333434. The cubic root of 340785 is about 69.8489942086.

The spelling of 340785 in words is "three hundred forty thousand, seven hundred eighty-five".