6384641 has 4 divisors (see below), whose sum is σ = 6402132. Its totient is φ = 6367152.

The previous prime is 6384629. The next prime is 6384647. The reversal of 6384641 is 1464836.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1113025 + 5271616 = 1055^2 + 2296^2 .

It is a cyclic number.

It is not a de Polignac number, because 6384641 - 2¹⁰ = 6383617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6384598 and 6384607.

It is not an unprimeable number, because it can be changed into a prime (6384647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8186 + ... + 8931.

It is an arithmetic number, because the mean of its divisors is an integer number (1600533).

Almost surely, 2^6384641 is an apocalyptic number.

It is an amenable number.

6384641 is a deficient number, since it is larger than the sum of its proper divisors (17491).

6384641 is a wasteful number, since it uses less digits than its factorization.

6384641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17490.

The product of its digits is 13824, while the sum is 32.

The square root of 6384641 is about 2526.7847157999. The cubic root of 6384641 is about 185.5149132040.

The spelling of 6384641 in words is "six million, three hundred eighty-four thousand, six hundred forty-one".