6846639 has 8 divisors (see below), whose sum is σ = 9443760. Its totient is φ = 4406976.

The previous prime is 6846611. The next prime is 6846641. The reversal of 6846639 is 9366486.

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

It is not a de Polignac number, because 6846639 - 2⁵ = 6846607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6846639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6846649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39262 + ... + 39435.

It is an arithmetic number, because the mean of its divisors is an integer number (1180470).

Almost surely, 2^6846639 is an apocalyptic number.

6846639 is a deficient number, since it is larger than the sum of its proper divisors (2597121).

6846639 is a wasteful number, since it uses less digits than its factorization.

6846639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78729.

The product of its digits is 186624, while the sum is 42.

The square root of 6846639 is about 2616.6083008353. The cubic root of 6846639 is about 189.8857947098.

The spelling of 6846639 in words is "six million, eight hundred forty-six thousand, six hundred thirty-nine".