380865 has 8 divisors (see below), whose sum is σ = 609408. Its totient is φ = 203120.

The previous prime is 380843. The next prime is 380867. The reversal of 380865 is 568083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 380865 - 2¹¹ = 378817 is a prime.

It is a Curzon number.

380865 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (380867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12681 + ... + 12710.

It is an arithmetic number, because the mean of its divisors is an integer number (76176).

2³⁸⁰⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

380865 is a deficient number, since it is larger than the sum of its proper divisors (228543).

380865 is a wasteful number, since it uses less digits than its factorization.

380865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25399.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 380865 is about 617.1426091269. The cubic root of 380865 is about 72.4864818236.

The spelling of 380865 in words is "three hundred eighty thousand, eight hundred sixty-five".