6679642 has 8 divisors (see below), whose sum is σ = 10037556. Its totient is φ = 3333792.

The previous prime is 6679639. The next prime is 6679661. The reversal of 6679642 is 2469766.

It can be written as a sum of positive squares in 2 ways, for example, as 5377761 + 1301881 = 2319^2 + 1141^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6679595 and 6679604.

It is an unprimeable number.

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, 1473 + ... + 3940.

Almost surely, 2^6679642 is an apocalyptic number.

6679642 is a deficient number, since it is larger than the sum of its proper divisors (3357914).

6679642 is a wasteful number, since it uses less digits than its factorization.

6679642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032.

The product of its digits is 108864, while the sum is 40.

The square root of 6679642 is about 2584.5003385568. The cubic root of 6679642 is about 188.3292292072.

The spelling of 6679642 in words is "six million, six hundred seventy-nine thousand, six hundred forty-two".