382705 has 4 divisors (see below), whose sum is σ = 459252. Its totient is φ = 306160.

The previous prime is 382703. The next prime is 382709. The reversal of 382705 is 507283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507283 = 7 ⋅72469.

It can be written as a sum of positive squares in 2 ways, for example, as 104976 + 277729 = 324^2 + 527^2 .

It is not a de Polignac number, because 382705 - 2¹ = 382703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 382705.

It is not an unprimeable number, because it can be changed into a prime (382703) 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, 38266 + ... + 38275.

It is an arithmetic number, because the mean of its divisors is an integer number (114813).

2³⁸²⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

382705 is a deficient number, since it is larger than the sum of its proper divisors (76547).

382705 is an equidigital number, since it uses as much as digits as its factorization.

382705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76546.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 382705 is about 618.6315543197. The cubic root of 382705 is about 72.6030243588.

Adding to 382705 its reverse (507283), we get a palindrome (889988).

The spelling of 382705 in words is "three hundred eighty-two thousand, seven hundred five".