6684247 has 4 divisors (see below), whose sum is σ = 7077456. Its totient is φ = 6291040.

The previous prime is 6684233. The next prime is 6684253. The reversal of 6684247 is 7424866.

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

It is a cyclic number.

It is not a de Polignac number, because 6684247 - 2¹⁵ = 6651479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6684277) 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, 196579 + ... + 196612.

It is an arithmetic number, because the mean of its divisors is an integer number (1769364).

Almost surely, 2^6684247 is an apocalyptic number.

6684247 is a deficient number, since it is larger than the sum of its proper divisors (393209).

6684247 is a wasteful number, since it uses less digits than its factorization.

6684247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393208.

The product of its digits is 64512, while the sum is 37.

The square root of 6684247 is about 2585.3910729327. The cubic root of 6684247 is about 188.3724978374.

The spelling of 6684247 in words is "six million, six hundred eighty-four thousand, two hundred forty-seven".