6684905 has 8 divisors (see below), whose sum is σ = 8045952. Its totient is φ = 5331888.

The previous prime is 6684869. The next prime is 6684907. The reversal of 6684905 is 5094866.

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 6684905 - 2¹⁶ = 6619369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6684907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (1005744).

Almost surely, 2^6684905 is an apocalyptic number.

It is an amenable number.

6684905 is a deficient number, since it is larger than the sum of its proper divisors (1361047).

6684905 is a wasteful number, since it uses less digits than its factorization.

6684905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6684905 is about 2585.5183232768. The cubic root of 6684905 is about 188.3786787898.

The spelling of 6684905 in words is "six million, six hundred eighty-four thousand, nine hundred five".