6666411 has 8 divisors (see below), whose sum is σ = 8938384. Its totient is φ = 4419360.

The previous prime is 6666391. The next prime is 6666437. The reversal of 6666411 is 1146666.

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

It is not a de Polignac number, because 6666411 - 2⁵ = 6666379 is a prime.

It is a Duffinian number.

6666411 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6766411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5596 + ... + 6681.

It is an arithmetic number, because the mean of its divisors is an integer number (1117298).

Almost surely, 2^6666411 is an apocalyptic number.

6666411 is a deficient number, since it is larger than the sum of its proper divisors (2271973).

6666411 is a wasteful number, since it uses less digits than its factorization.

6666411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12461.

The product of its digits is 5184, while the sum is 30.

The square root of 6666411 is about 2581.9393873598. The cubic root of 6666411 is about 188.2047998300.

The spelling of 6666411 in words is "six million, six hundred sixty-six thousand, four hundred eleven".