386644 has 6 divisors (see below), whose sum is σ = 676634. Its totient is φ = 193320.

The previous prime is 386641. The next prime is 386647. The reversal of 386644 is 446683.

It is an interprime number because it is at equal distance from previous prime (386641) and next prime (386647).

It can be written as a sum of positive squares in only one way, i.e., 374544 + 12100 = 612^2 + 110^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48327 + ... + 48334.

2³⁸⁶⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

386644 is a deficient number, since it is larger than the sum of its proper divisors (289990).

386644 is a wasteful number, since it uses less digits than its factorization.

386644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96665 (or 96663 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 386644 is about 621.8070440257. The cubic root of 386644 is about 72.8512640576.

The spelling of 386644 in words is "three hundred eighty-six thousand, six hundred forty-four".