6666698 has 8 divisors (see below), whose sum is σ = 10013760. Its totient is φ = 3328780.

The previous prime is 6666689. The next prime is 6666719. The reversal of 6666698 is 8966666.

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

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, 8 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (1251720).

Almost surely, 2^6666698 is an apocalyptic number.

6666698 is a deficient number, since it is larger than the sum of its proper divisors (3347062).

6666698 is a wasteful number, since it uses less digits than its factorization.

6666698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572.

The product of its digits is 559872, while the sum is 47.

The square root of 6666698 is about 2581.9949651384. The cubic root of 6666698 is about 188.2075006337.

Subtracting 6666698 from its reverse (8966666), we obtain a cube (2299968 = 132³).

The spelling of 6666698 in words is "six million, six hundred sixty-six thousand, six hundred ninety-eight".