386566 has 4 divisors (see below), whose sum is σ = 579852. Its totient is φ = 193282.

The previous prime is 386549. The next prime is 386569. The reversal of 386566 is 665683.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386569) by changing a digit.

386566 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96640 + ... + 96643.

It is an arithmetic number, because the mean of its divisors is an integer number (144963).

2³⁸⁶⁵⁶⁶ is an apocalyptic number.

386566 is a deficient number, since it is larger than the sum of its proper divisors (193286).

386566 is a wasteful number, since it uses less digits than its factorization.

386566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193285.

The product of its digits is 25920, while the sum is 34.

The square root of 386566 is about 621.7443204405. The cubic root of 386566 is about 72.8463648215.

The spelling of 386566 in words is "three hundred eighty-six thousand, five hundred sixty-six".