6664799 has 8 divisors (see below), whose sum is σ = 7173648. Its totient is φ = 6168960.

The previous prime is 6664789. The next prime is 6664811. The reversal of 6664799 is 9974666.

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

It is not a de Polignac number, because 6664799 - 2⁸ = 6664543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664729) 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, 2177 + ... + 4250.

It is an arithmetic number, because the mean of its divisors is an integer number (896706).

Almost surely, 2^6664799 is an apocalyptic number.

6664799 is a deficient number, since it is larger than the sum of its proper divisors (508849).

6664799 is a wasteful number, since it uses less digits than its factorization.

6664799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505.

The product of its digits is 489888, while the sum is 47.

The square root of 6664799 is about 2581.6272000426. The cubic root of 6664799 is about 188.1896287185.

The spelling of 6664799 in words is "six million, six hundred sixty-four thousand, seven hundred ninety-nine".