380565 has 16 divisors (see below), whose sum is σ = 676800. Its totient is φ = 202896.

The previous prime is 380563. The next prime is 380591. The reversal of 380565 is 565083.

It is not a de Polignac number, because 380565 - 2¹ = 380563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 3¹¹ + 8³ + 5⁷ + 0 + 6⁶ + 5⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380563) 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 15 ways as a sum of consecutive naturals, for example, 1275 + ... + 1544.

It is an arithmetic number, because the mean of its divisors is an integer number (42300).

2³⁸⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

380565 is a deficient number, since it is larger than the sum of its proper divisors (296235).

380565 is a wasteful number, since it uses less digits than its factorization.

380565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833 (or 2827 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 380565 is about 616.8995055923. The cubic root of 380565 is about 72.4674447574.

The spelling of 380565 in words is "three hundred eighty thousand, five hundred sixty-five".