384645 has 8 divisors (see below), whose sum is σ = 615456. Its totient is φ = 205136.

The previous prime is 384641. The next prime is 384673. The reversal of 384645 is 546483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 384645 - 2² = 384641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384641) 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 7 ways as a sum of consecutive naturals, for example, 12807 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (76932).

2³⁸⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

384645 is a deficient number, since it is larger than the sum of its proper divisors (230811).

384645 is a wasteful number, since it uses less digits than its factorization.

384645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25651.

The product of its digits is 11520, while the sum is 30.

The square root of 384645 is about 620.1975491728. The cubic root of 384645 is about 72.7254968790.

It can be divided in two parts, 3 and 84645, that added together give a palindrome (84648).

The spelling of 384645 in words is "three hundred eighty-four thousand, six hundred forty-five".