6666441 has 4 divisors (see below), whose sum is σ = 8888592. Its totient is φ = 4444292.

The previous prime is 6666437. The next prime is 6666449. The reversal of 6666441 is 1446666.

6666441 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6666441 - 2² = 6666437 is a prime.

It is a D-number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6666449) 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, 1111071 + ... + 1111076.

It is an arithmetic number, because the mean of its divisors is an integer number (2222148).

Almost surely, 2^6666441 is an apocalyptic number.

It is an amenable number.

6666441 is a deficient number, since it is larger than the sum of its proper divisors (2222151).

6666441 is a wasteful number, since it uses less digits than its factorization.

6666441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222150.

The product of its digits is 20736, while the sum is 33.

The square root of 6666441 is about 2581.9451969397. The cubic root of 6666441 is about 188.2050821476.

The spelling of 6666441 in words is "six million, six hundred sixty-six thousand, four hundred forty-one".