6666942 has 8 divisors (see below), whose sum is σ = 13333896. Its totient is φ = 2222312.

The previous prime is 6666937. The next prime is 6666943. The reversal of 6666942 is 2496666.

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

6666942 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 6666942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666943) 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, 555573 + ... + 555584.

It is an arithmetic number, because the mean of its divisors is an integer number (1666737).

Almost surely, 2^6666942 is an apocalyptic number.

6666942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666942 is a wasteful number, since it uses less digits than its factorization.

6666942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111162.

The product of its digits is 93312, while the sum is 39.

The square root of 6666942 is about 2582.0422149918. The cubic root of 6666942 is about 188.2097967264.

The spelling of 6666942 in words is "six million, six hundred sixty-six thousand, nine hundred forty-two".