386643 has 6 divisors (see below), whose sum is σ = 516964. Its totient is φ = 257044.

The previous prime is 386641. The next prime is 386647. The reversal of 386643 is 346683.

It is not a de Polignac number, because 386643 - 2¹ = 386641 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 386643.

It is not an unprimeable number, because it can be changed into a prime (386641) 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 5 ways as a sum of consecutive naturals, for example, 898 + ... + 1256.

2³⁸⁶⁶⁴³ is an apocalyptic number.

386643 is a deficient number, since it is larger than the sum of its proper divisors (130321).

386643 is an frugal number, since it uses more digits than its factorization.

386643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 362 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 386643 is about 621.8062399172. The cubic root of 386643 is about 72.8512012511.

The spelling of 386643 in words is "three hundred eighty-six thousand, six hundred forty-three".