385705 has 4 divisors (see below), whose sum is σ = 462852. Its totient is φ = 308560.

The previous prime is 385663. The next prime is 385709. The reversal of 385705 is 507583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507583 = 271 ⋅1873.

It can be written as a sum of positive squares in 2 ways, for example, as 143641 + 242064 = 379^2 + 492^2 .

It is not a de Polignac number, because 385705 - 2⁹ = 385193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38566 + ... + 38575.

It is an arithmetic number, because the mean of its divisors is an integer number (115713).

2³⁸⁵⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

385705 is a deficient number, since it is larger than the sum of its proper divisors (77147).

385705 is an equidigital number, since it uses as much as digits as its factorization.

385705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77146.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 385705 is about 621.0515276529. The cubic root of 385705 is about 72.7922409514.

The spelling of 385705 in words is "three hundred eighty-five thousand, seven hundred five".