6668579 has 8 divisors (see below), whose sum is σ = 6935760. Its totient is φ = 6403936.

The previous prime is 6668567. The next prime is 6668603. The reversal of 6668579 is 9758666.

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 6668579 - 2¹⁶ = 6603043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668509) 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, 6077 + ... + 7089.

It is an arithmetic number, because the mean of its divisors is an integer number (866970).

Almost surely, 2^6668579 is an apocalyptic number.

6668579 is a deficient number, since it is larger than the sum of its proper divisors (267181).

6668579 is a wasteful number, since it uses less digits than its factorization.

6668579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its digits is 544320, while the sum is 47.

The square root of 6668579 is about 2582.3591926763. The cubic root of 6668579 is about 188.2251998014.

The spelling of 6668579 in words is "six million, six hundred sixty-eight thousand, five hundred seventy-nine".