6679641 has 4 divisors (see below), whose sum is σ = 8906192. Its totient is φ = 4453092.

The previous prime is 6679639. The next prime is 6679661. The reversal of 6679641 is 1469766.

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 not a de Polignac number, because 6679641 - 2¹ = 6679639 is a prime.

It is an Ulam number.

It is a D-number.

It is the 2585-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6679641.

It is not an unprimeable number, because it can be changed into a prime (6679661) by changing a digit.

It is a nontrivial repunit in base 2584.

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 3 ways as a sum of consecutive naturals, for example, 1113271 + ... + 1113276.

It is an arithmetic number, because the mean of its divisors is an integer number (2226548).

Almost surely, 2^6679641 is an apocalyptic number.

It is an amenable number.

6679641 is a deficient number, since it is larger than the sum of its proper divisors (2226551).

6679641 is a wasteful number, since it uses less digits than its factorization.

6679641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226550.

The product of its digits is 54432, while the sum is 39.

The square root of 6679641 is about 2584.5001450958. The cubic root of 6679641 is about 188.3292198090.

The spelling of 6679641 in words is "six million, six hundred seventy-nine thousand, six hundred forty-one".