6384649 has 4 divisors (see below), whose sum is σ = 6415120. Its totient is φ = 6354180.

The previous prime is 6384647. The next prime is 6384689. The reversal of 6384649 is 9464836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6384649 - 2¹ = 6384647 is a prime.

It is an Ulam number.

It is a Duffinian number.

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, 14919 + ... + 15340.

It is an arithmetic number, because the mean of its divisors is an integer number (1603780).

Almost surely, 2^6384649 is an apocalyptic number.

It is an amenable number.

6384649 is a deficient number, since it is larger than the sum of its proper divisors (30471).

6384649 is a wasteful number, since it uses less digits than its factorization.

6384649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30470.

The product of its digits is 124416, while the sum is 40.

The square root of 6384649 is about 2526.7862988389. The cubic root of 6384649 is about 185.5149906878.

The spelling of 6384649 in words is "six million, three hundred eighty-four thousand, six hundred forty-nine".