6666065 has 16 divisors (see below), whose sum is σ = 9187968. Its totient is φ = 4548096.

The previous prime is 6666061. The next prime is 6666097. The reversal of 6666065 is 5606666.

It is not a de Polignac number, because 6666065 - 2² = 6666061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666061) 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 15 ways as a sum of consecutive naturals, for example, 9569 + ... + 10241.

It is an arithmetic number, because the mean of its divisors is an integer number (574248).

Almost surely, 2^6666065 is an apocalyptic number.

It is an amenable number.

6666065 is a deficient number, since it is larger than the sum of its proper divisors (2521903).

6666065 is a wasteful number, since it uses less digits than its factorization.

6666065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 6666065 is about 2581.8723825937. The cubic root of 6666065 is about 188.2015437058.

The spelling of 6666065 in words is "six million, six hundred sixty-six thousand, sixty-five".