6664079 has 4 divisors (see below), whose sum is σ = 7014840. Its totient is φ = 6313320.

The previous prime is 6664069. The next prime is 6664087. The reversal of 6664079 is 9704666.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6664079 - 2²⁰ = 5615503 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 (6664019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175352 + ... + 175389.

It is an arithmetic number, because the mean of its divisors is an integer number (1753710).

Almost surely, 2^6664079 is an apocalyptic number.

6664079 is a deficient number, since it is larger than the sum of its proper divisors (350761).

6664079 is a wasteful number, since it uses less digits than its factorization.

6664079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350760.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 6664079 is about 2581.4877493415. The cubic root of 6664079 is about 188.1828517493.

The spelling of 6664079 in words is "six million, six hundred sixty-four thousand, seventy-nine".