6679561 has 8 divisors (see below), whose sum is σ = 7759424. Its totient is φ = 5631120.

The previous prime is 6679553. The next prime is 6679571. The reversal of 6679561 is 1659766.

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 6679561 - 2³ = 6679553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6679531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7395 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (969928).

Almost surely, 2^6679561 is an apocalyptic number.

6679561 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6679561 is a deficient number, since it is larger than the sum of its proper divisors (1079863).

6679561 is a wasteful number, since it uses less digits than its factorization.

6679561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15711.

The product of its digits is 68040, while the sum is 40.

The square root of 6679561 is about 2584.4846681689. The cubic root of 6679561 is about 188.3284679524.

The spelling of 6679561 in words is "six million, six hundred seventy-nine thousand, five hundred sixty-one".