380566 has 4 divisors (see below), whose sum is σ = 570852. Its totient is φ = 190282.

The previous prime is 380563. The next prime is 380591. The reversal of 380566 is 665083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665083 = 61 ⋅10903.

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 as a sum of consecutive naturals, namely, 95140 + ... + 95143.

It is an arithmetic number, because the mean of its divisors is an integer number (142713).

2³⁸⁰⁵⁶⁶ is an apocalyptic number.

380566 is a deficient number, since it is larger than the sum of its proper divisors (190286).

380566 is a wasteful number, since it uses less digits than its factorization.

380566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190285.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 380566 is about 616.9003160965. The cubic root of 380566 is about 72.4675082309.

It can be divided in two parts, 380 and 566, that added together give a triangular number (946 = T₄₃).

The spelling of 380566 in words is "three hundred eighty thousand, five hundred sixty-six".