6666755 has 8 divisors (see below), whose sum is σ = 8014272. Its totient is φ = 5323968.

The previous prime is 6666749. The next prime is 6666761. The reversal of 6666755 is 5576666.

It is an interprime number because it is at equal distance from previous prime (6666749) and next prime (6666761).

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 6666755 - 2¹⁸ = 6404611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3974 + ... + 5396.

It is an arithmetic number, because the mean of its divisors is an integer number (1001784).

Almost surely, 2^6666755 is an apocalyptic number.

6666755 is a deficient number, since it is larger than the sum of its proper divisors (1347517).

6666755 is a wasteful number, since it uses less digits than its factorization.

6666755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365.

The product of its digits is 226800, while the sum is 41.

The square root of 6666755 is about 2582.0060030914. The cubic root of 6666755 is about 188.2080370210.

The spelling of 6666755 in words is "six million, six hundred sixty-six thousand, seven hundred fifty-five".